Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 4 | * Copyright (C) 2007-2009 coresystems GmbH |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
Patrick Georgi | d083595 | 2010-10-05 09:07:10 +0000 | [diff] [blame] | 20 | #include <console/console.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 21 | #include <cpu/x86/mtrr.h> |
| 22 | #include <cpu/x86/cache.h> |
Edwin Beasant | eb50c7d | 2010-07-06 21:05:04 +0000 | [diff] [blame] | 23 | #include <pc80/mc146818rtc.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 24 | #include <spd.h> |
Patrick Georgi | d083595 | 2010-10-05 09:07:10 +0000 | [diff] [blame] | 25 | #include <string.h> |
| 26 | #include <arch/romcc_io.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 27 | #include "raminit.h" |
| 28 | #include "i945.h" |
Rudolf Marek | c436953 | 2010-12-13 19:59:13 +0000 | [diff] [blame] | 29 | #include <cbmem.h> |
| 30 | |
Stefan Reinauer | 259a39f | 2010-12-16 23:24:27 +0000 | [diff] [blame] | 31 | struct cbmem_entry *get_cbmem_toc(void) |
| 32 | { |
Rudolf Marek | c436953 | 2010-12-13 19:59:13 +0000 | [diff] [blame] | 33 | return (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE); |
| 34 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 35 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 36 | /* Debugging macros. */ |
Uwe Hermann | 01ce601 | 2010-03-05 10:03:50 +0000 | [diff] [blame] | 37 | #if CONFIG_DEBUG_RAM_SETUP |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 38 | #define PRINTK_DEBUG(x...) printk(BIOS_DEBUG, x) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 39 | #else |
| 40 | #define PRINTK_DEBUG(x...) |
| 41 | #endif |
| 42 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 43 | #define RAM_INITIALIZATION_COMPLETE (1 << 19) |
| 44 | |
| 45 | #define RAM_COMMAND_SELF_REFRESH (0x0 << 16) |
| 46 | #define RAM_COMMAND_NOP (0x1 << 16) |
| 47 | #define RAM_COMMAND_PRECHARGE (0x2 << 16) |
| 48 | #define RAM_COMMAND_MRS (0x3 << 16) |
| 49 | #define RAM_COMMAND_EMRS (0x4 << 16) |
| 50 | #define RAM_COMMAND_CBR (0x6 << 16) |
| 51 | #define RAM_COMMAND_NORMAL (0x7 << 16) |
| 52 | |
| 53 | #define RAM_EMRS_1 (0x0 << 21) |
| 54 | #define RAM_EMRS_2 (0x1 << 21) |
| 55 | #define RAM_EMRS_3 (0x2 << 21) |
| 56 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 57 | static int get_dimm_spd_address(struct sys_info *sysinfo, int device) |
| 58 | { |
| 59 | if (sysinfo->spd_addresses) |
| 60 | return sysinfo->spd_addresses[device]; |
| 61 | else |
| 62 | return DIMM0 + device; |
| 63 | |
| 64 | } |
| 65 | |
Patrick Georgi | d083595 | 2010-10-05 09:07:10 +0000 | [diff] [blame] | 66 | static inline int spd_read_byte(unsigned device, unsigned address) |
| 67 | { |
| 68 | return smbus_read_byte(device, address); |
| 69 | } |
| 70 | |
Stefan Reinauer | bc8613e | 2010-08-25 18:35:42 +0000 | [diff] [blame] | 71 | static __attribute__((noinline)) void do_ram_command(u32 command) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 72 | { |
| 73 | u32 reg32; |
| 74 | |
| 75 | reg32 = MCHBAR32(DCC); |
| 76 | reg32 &= ~( (3<<21) | (1<<20) | (1<<19) | (7 << 16) ); |
| 77 | reg32 |= command; |
| 78 | |
| 79 | /* Also set Init Complete */ |
| 80 | if (command == RAM_COMMAND_NORMAL) |
| 81 | reg32 |= RAM_INITIALIZATION_COMPLETE; |
| 82 | |
| 83 | PRINTK_DEBUG(" Sending RAM command 0x%08x", reg32); |
| 84 | |
| 85 | MCHBAR32(DCC) = reg32; /* This is the actual magic */ |
| 86 | |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 87 | PRINTK_DEBUG("...done\n"); |
Stefan Reinauer | d058ad1 | 2010-08-26 12:43:58 +0000 | [diff] [blame] | 88 | |
| 89 | udelay(1); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 90 | } |
| 91 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 92 | static void ram_read32(u32 offset) |
| 93 | { |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 94 | PRINTK_DEBUG(" ram read: %08x\n", offset); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 95 | |
| 96 | read32(offset); |
| 97 | } |
| 98 | |
Uwe Hermann | 01ce601 | 2010-03-05 10:03:50 +0000 | [diff] [blame] | 99 | #if CONFIG_DEBUG_RAM_SETUP |
Stefan Reinauer | 3c0bfaf | 2010-12-27 11:34:57 +0000 | [diff] [blame] | 100 | void sdram_dump_mchbar_registers(void) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 101 | { |
| 102 | int i; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 103 | printk(BIOS_DEBUG, "Dumping MCHBAR Registers\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 104 | |
| 105 | for (i=0; i<0xfff; i+=4) { |
| 106 | if (MCHBAR32(i) == 0) |
| 107 | continue; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 108 | printk(BIOS_DEBUG, "0x%04x: 0x%08x\n", i, MCHBAR32(i)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 109 | } |
| 110 | } |
| 111 | #endif |
| 112 | |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 113 | static int memclk(void) |
| 114 | { |
| 115 | int offset = 0; |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 116 | #if defined(CONFIG_NORTHBRIDGE_INTEL_I945GM) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 117 | offset++; |
| 118 | #endif |
| 119 | switch (((MCHBAR32(CLKCFG) >> 4) & 7) - offset) { |
| 120 | case 1: return 400; |
| 121 | case 2: return 533; |
| 122 | case 3: return 667; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 123 | default: printk(BIOS_DEBUG, "memclk: unknown register value %x\n", ((MCHBAR32(CLKCFG) >> 4) & 7) - offset); |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 124 | } |
| 125 | return -1; |
| 126 | } |
| 127 | |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 128 | #if defined(CONFIG_NORTHBRIDGE_INTEL_I945GM) |
Peter Stuge | 76d9143 | 2010-10-01 10:02:33 +0000 | [diff] [blame] | 129 | static u16 fsbclk(void) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 130 | { |
| 131 | switch (MCHBAR32(CLKCFG) & 7) { |
| 132 | case 0: return 400; |
| 133 | case 1: return 533; |
| 134 | case 3: return 667; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 135 | default: printk(BIOS_DEBUG, "fsbclk: unknown register value %x\n", MCHBAR32(CLKCFG) & 7); |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 136 | } |
Peter Stuge | 76d9143 | 2010-10-01 10:02:33 +0000 | [diff] [blame] | 137 | return 0xffff; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 138 | } |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 139 | #elif defined(CONFIG_NORTHBRIDGE_INTEL_I945GC) |
Peter Stuge | 76d9143 | 2010-10-01 10:02:33 +0000 | [diff] [blame] | 140 | static u16 fsbclk(void) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 141 | { |
| 142 | switch (MCHBAR32(CLKCFG) & 7) { |
| 143 | case 0: return 1066; |
| 144 | case 1: return 533; |
| 145 | case 2: return 800; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 146 | default: printk(BIOS_DEBUG, "fsbclk: unknown register value %x\n", MCHBAR32(CLKCFG) & 7); |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 147 | } |
Peter Stuge | 76d9143 | 2010-10-01 10:02:33 +0000 | [diff] [blame] | 148 | return 0xffff; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 149 | } |
| 150 | #endif |
| 151 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 152 | static int sdram_capabilities_max_supported_memory_frequency(void) |
| 153 | { |
| 154 | u32 reg32; |
| 155 | |
Patrick Georgi | 77d6683 | 2010-10-01 08:02:45 +0000 | [diff] [blame] | 156 | #if CONFIG_MAXIMUM_SUPPORTED_FREQUENCY |
| 157 | return CONFIG_MAXIMUM_SUPPORTED_FREQUENCY; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 158 | #endif |
| 159 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 160 | reg32 = pci_read_config32(PCI_DEV(0, 0x00, 0), 0xe4); /* CAPID0 + 4 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 161 | reg32 &= (7 << 0); |
| 162 | |
| 163 | switch (reg32) { |
| 164 | case 4: return 400; |
| 165 | case 3: return 533; |
| 166 | case 2: return 667; |
| 167 | } |
| 168 | /* Newer revisions of this chipset rather support faster memory clocks, |
| 169 | * so if it's a reserved value, return the fastest memory clock that we |
| 170 | * know of and can handle |
| 171 | */ |
| 172 | return 667; |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * @brief determine whether chipset is capable of dual channel interleaved mode |
| 177 | * |
| 178 | * @return 1 if interleaving is supported, 0 otherwise |
| 179 | */ |
| 180 | static int sdram_capabilities_interleave(void) |
| 181 | { |
| 182 | u32 reg32; |
| 183 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 184 | reg32 = pci_read_config32(PCI_DEV(0, 0x00,0), 0xe4); /* CAPID0 + 4 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 185 | reg32 >>= 25; |
| 186 | reg32 &= 1; |
| 187 | |
| 188 | return (!reg32); |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * @brief determine whether chipset is capable of two memory channels |
| 193 | * |
| 194 | * @return 1 if dual channel operation is supported, 0 otherwise |
| 195 | */ |
| 196 | static int sdram_capabilities_dual_channel(void) |
| 197 | { |
| 198 | u32 reg32; |
| 199 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 200 | reg32 = pci_read_config32(PCI_DEV(0, 0x00,0), 0xe4); /* CAPID0 + 4 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 201 | reg32 >>= 24; |
| 202 | reg32 &= 1; |
| 203 | |
| 204 | return (!reg32); |
| 205 | } |
| 206 | |
| 207 | static int sdram_capabilities_enhanced_addressing_xor(void) |
| 208 | { |
| 209 | u8 reg8; |
| 210 | |
| 211 | reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe5); /* CAPID0 + 5 */ |
| 212 | reg8 &= (1 << 7); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 213 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 214 | return (!reg8); |
| 215 | } |
| 216 | |
| 217 | static int sdram_capabilities_two_dimms_per_channel(void) |
| 218 | { |
| 219 | u8 reg8; |
| 220 | |
| 221 | reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe8); /* CAPID0 + 8 */ |
| 222 | reg8 &= (1 << 0); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 223 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 224 | return (reg8 != 0); |
| 225 | } |
| 226 | |
Stefan Reinauer | 14e2277 | 2010-04-27 06:56:47 +0000 | [diff] [blame] | 227 | // TODO check if we ever need this function |
Stefan Reinauer | 53b0ea4 | 2010-03-22 11:50:52 +0000 | [diff] [blame] | 228 | #if 0 |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 229 | static int sdram_capabilities_MEM4G_disable(void) |
| 230 | { |
| 231 | u8 reg8; |
| 232 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 233 | reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe5); /* CAPID0 + 5 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 234 | reg8 &= (1 << 0); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 235 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 236 | return (reg8 != 0); |
| 237 | } |
Stefan Reinauer | 53b0ea4 | 2010-03-22 11:50:52 +0000 | [diff] [blame] | 238 | #endif |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 239 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 240 | #define GFX_FREQUENCY_CAP_166MHZ 0x04 |
| 241 | #define GFX_FREQUENCY_CAP_200MHZ 0x03 |
| 242 | #define GFX_FREQUENCY_CAP_250MHZ 0x02 |
| 243 | #define GFX_FREQUENCY_CAP_ALL 0x00 |
| 244 | |
| 245 | static int sdram_capabilities_core_frequencies(void) |
| 246 | { |
| 247 | u8 reg8; |
| 248 | |
| 249 | reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe5); /* CAPID0 + 5 */ |
| 250 | reg8 &= (1 << 3) | (1 << 2) | (1 << 1); |
| 251 | reg8 >>= 1; |
| 252 | |
| 253 | return (reg8); |
| 254 | } |
| 255 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 256 | static void sdram_detect_errors(struct sys_info *sysinfo) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 257 | { |
| 258 | u8 reg8; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 259 | u8 do_reset = 0; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 260 | |
| 261 | reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 262 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 263 | if (reg8 & ((1<<7)|(1<<2))) { |
| 264 | if (reg8 & (1<<2)) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 265 | printk(BIOS_DEBUG, "SLP S4# Assertion Width Violation.\n"); |
Stefan Reinauer | f98ad3a | 2010-03-05 18:25:19 +0000 | [diff] [blame] | 266 | /* Write back clears bit 2 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 267 | pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); |
Stefan Reinauer | f98ad3a | 2010-03-05 18:25:19 +0000 | [diff] [blame] | 268 | do_reset = 1; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 269 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | if (reg8 & (1<<7)) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 273 | printk(BIOS_DEBUG, "DRAM initialization was interrupted.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 274 | reg8 &= ~(1<<7); |
| 275 | pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 276 | do_reset = 1; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 277 | } |
| 278 | |
| 279 | /* Set SLP_S3# Assertion Stretch Enable */ |
| 280 | reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4); /* GEN_PMCON_3 */ |
| 281 | reg8 |= (1 << 3); |
| 282 | pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8); |
| 283 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 284 | if (do_reset) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 285 | printk(BIOS_DEBUG, "Reset required.\n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 286 | outb(0x00, 0xcf9); |
| 287 | outb(0x0e, 0xcf9); |
Stefan Reinauer | f98ad3a | 2010-03-05 18:25:19 +0000 | [diff] [blame] | 288 | for (;;) asm("hlt"); /* Wait for reset! */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 289 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | /* Set DRAM initialization bit in ICH7 */ |
| 293 | reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2); |
| 294 | reg8 |= (1<<7); |
| 295 | pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 296 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 297 | /* clear self refresh if not wake-up from suspend */ |
| 298 | if (sysinfo->boot_path != 2) { |
| 299 | MCHBAR8(0xf14) |= 3; |
| 300 | } else { |
| 301 | /* Validate self refresh config */ |
| 302 | if (((sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED) || |
| 303 | (sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED)) && |
| 304 | !(MCHBAR8(0xf14) & (1<<0))) { |
| 305 | do_reset = 1; |
| 306 | } |
| 307 | if (((sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED) || |
| 308 | (sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED)) && |
| 309 | !(MCHBAR8(0xf14) & (1<<1))) { |
| 310 | do_reset = 1; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | if (do_reset) { |
| 315 | printk(BIOS_DEBUG, "Reset required.\n"); |
| 316 | outb(0x00, 0xcf9); |
| 317 | outb(0x0e, 0xcf9); |
| 318 | for (;;) asm("hlt"); /* Wait for reset! */ |
| 319 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 320 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 321 | |
| 322 | /** |
| 323 | * @brief Get generic DIMM parameters. |
| 324 | * @param sysinfo Central memory controller information structure |
| 325 | * |
| 326 | * This function gathers several pieces of information for each system DIMM: |
| 327 | * o DIMM width (x8 / x16) |
| 328 | * o DIMM sides (single sided / dual sided) |
| 329 | * |
| 330 | * Also, some non-supported scenarios are detected. |
| 331 | */ |
| 332 | |
| 333 | static void sdram_get_dram_configuration(struct sys_info *sysinfo) |
| 334 | { |
| 335 | u32 dimm_mask = 0; |
| 336 | int i; |
| 337 | |
| 338 | /** |
| 339 | * i945 supports two DIMMs, in two configurations: |
| 340 | * |
Uwe Hermann | d773fd3 | 2010-11-20 20:23:08 +0000 | [diff] [blame] | 341 | * - single channel with two DIMMs |
| 342 | * - dual channel with one DIMM per channel |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 343 | * |
Uwe Hermann | d773fd3 | 2010-11-20 20:23:08 +0000 | [diff] [blame] | 344 | * In practice dual channel mainboards have their SPD at 0x50/0x52 |
| 345 | * whereas single channel configurations have their SPD at 0x50/0x51. |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 346 | * |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 347 | * The capability register knows a lot about the channel configuration |
Uwe Hermann | d773fd3 | 2010-11-20 20:23:08 +0000 | [diff] [blame] | 348 | * but for now we stick with the information we gather via SPD. |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 349 | */ |
| 350 | |
| 351 | if (sdram_capabilities_dual_channel()) { |
| 352 | sysinfo->dual_channel = 1; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 353 | printk(BIOS_DEBUG, "This mainboard supports Dual Channel Operation.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 354 | } else { |
| 355 | sysinfo->dual_channel = 0; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 356 | printk(BIOS_DEBUG, "This mainboard supports only Single Channel Operation.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | /** |
| 360 | * Since we only support two DIMMs in total, there is a limited number |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 361 | * of combinations. This function returns the type of DIMMs. |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 362 | * return value: |
| 363 | * [0:7] lower DIMM population |
| 364 | * [8-15] higher DIMM population |
| 365 | * [16] dual channel? |
| 366 | * |
| 367 | * There are 5 different possible populations for a DIMM socket: |
| 368 | * 1. x16 double sided (X16DS) |
| 369 | * 2. x8 double sided (X8DS) |
| 370 | * 3. x16 single sided (X16SS) |
| 371 | * 4. x8 double stacked (X8DDS) |
| 372 | * 5. not populated (NC) |
| 373 | * |
| 374 | * For the return value we start counting at zero. |
| 375 | * |
| 376 | */ |
| 377 | |
| 378 | for (i=0; i<(2 * DIMM_SOCKETS); i++) { |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 379 | int device = get_dimm_spd_address(sysinfo, i); |
| 380 | u8 reg8; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 381 | |
| 382 | /* Initialize the socket information with a sane value */ |
| 383 | sysinfo->dimm[i] = SYSINFO_DIMM_NOT_POPULATED; |
| 384 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 385 | /* Dual Channel not supported, but Channel 1? Bail out */ |
| 386 | if (!sdram_capabilities_dual_channel() && (i >> 1)) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 387 | continue; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 388 | |
| 389 | /* Two DIMMs per channel not supported, but odd DIMM number? */ |
| 390 | if (!sdram_capabilities_two_dimms_per_channel() && (i& 1)) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 391 | continue; |
| 392 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 393 | printk(BIOS_DEBUG, "DDR II Channel %d Socket %d: ", (i >> 1), (i & 1)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 394 | |
| 395 | if (spd_read_byte(device, SPD_MEMORY_TYPE) != SPD_MEMORY_TYPE_SDRAM_DDR2) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 396 | printk(BIOS_DEBUG, "N/A\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 397 | continue; |
| 398 | } |
| 399 | |
| 400 | reg8 = spd_read_byte(device, SPD_DIMM_CONFIG_TYPE); |
| 401 | if (reg8 == ERROR_SCHEME_ECC) |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 402 | die("Error: ECC memory not supported by this chipset\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 403 | |
| 404 | reg8 = spd_read_byte(device, SPD_MODULE_ATTRIBUTES); |
| 405 | if (reg8 & MODULE_BUFFERED) |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 406 | die("Error: Buffered memory not supported by this chipset\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 407 | if (reg8 & MODULE_REGISTERED) |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 408 | die("Error: Registered memory not supported by this chipset\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 409 | |
| 410 | switch (spd_read_byte(device, SPD_PRIMARY_SDRAM_WIDTH)) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 411 | case 0x08: |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 412 | switch (spd_read_byte(device, SPD_NUM_DIMM_BANKS) & 0x0f) { |
| 413 | case 1: |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 414 | printk(BIOS_DEBUG, "x8DDS\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 415 | sysinfo->dimm[i] = SYSINFO_DIMM_X8DDS; |
| 416 | break; |
| 417 | case 0: |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 418 | printk(BIOS_DEBUG, "x8DS\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 419 | sysinfo->dimm[i] = SYSINFO_DIMM_X8DS; |
| 420 | break; |
| 421 | default: |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 422 | printk(BIOS_DEBUG, "Unsupported.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 423 | } |
| 424 | break; |
| 425 | case 0x10: |
| 426 | switch (spd_read_byte(device, SPD_NUM_DIMM_BANKS) & 0x0f) { |
| 427 | case 1: |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 428 | printk(BIOS_DEBUG, "x16DS\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 429 | sysinfo->dimm[i] = SYSINFO_DIMM_X16DS; |
| 430 | break; |
| 431 | case 0: |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 432 | printk(BIOS_DEBUG, "x16SS\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 433 | sysinfo->dimm[i] = SYSINFO_DIMM_X16SS; |
| 434 | break; |
| 435 | default: |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 436 | printk(BIOS_DEBUG, "Unsupported.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 437 | } |
| 438 | break; |
| 439 | default: |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 440 | die("Unsupported DDR-II memory width.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | dimm_mask |= (1 << i); |
| 444 | } |
| 445 | |
| 446 | if (!dimm_mask) { |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 447 | die("No memory installed.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 448 | } |
| 449 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 450 | if (!(dimm_mask & ((1 << DIMM_SOCKETS) - 1))) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 451 | printk(BIOS_INFO, "Channel 0 has no memory populated.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 452 | } |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * @brief determine if any DIMMs are stacked |
| 457 | * |
| 458 | * @param sysinfo central sysinfo data structure. |
| 459 | */ |
| 460 | static void sdram_verify_package_type(struct sys_info * sysinfo) |
| 461 | { |
| 462 | int i; |
| 463 | |
| 464 | /* Assume no stacked DIMMs are available until we find one */ |
| 465 | sysinfo->package = 0; |
| 466 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 467 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 468 | continue; |
| 469 | |
| 470 | /* Is the current DIMM a stacked DIMM? */ |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 471 | if (spd_read_byte(get_dimm_spd_address(sysinfo, i), SPD_NUM_DIMM_BANKS) & (1 << 4)) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 472 | sysinfo->package = 1; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | static u8 sdram_possible_cas_latencies(struct sys_info * sysinfo) |
| 477 | { |
| 478 | int i; |
| 479 | u8 cas_mask; |
| 480 | |
| 481 | /* Setup CAS mask with all supported CAS Latencies */ |
| 482 | cas_mask = SPD_CAS_LATENCY_DDR2_3 | |
| 483 | SPD_CAS_LATENCY_DDR2_4 | |
| 484 | SPD_CAS_LATENCY_DDR2_5; |
| 485 | |
| 486 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 487 | if (sysinfo->dimm[i] != SYSINFO_DIMM_NOT_POPULATED) |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 488 | cas_mask &= spd_read_byte(get_dimm_spd_address(sysinfo, i), |
| 489 | SPD_ACCEPTABLE_CAS_LATENCIES); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | if(!cas_mask) { |
| 493 | die("No DDR-II modules with accepted CAS latencies found.\n"); |
| 494 | } |
| 495 | |
| 496 | return cas_mask; |
| 497 | } |
| 498 | |
| 499 | static void sdram_detect_cas_latency_and_ram_speed(struct sys_info * sysinfo, u8 cas_mask) |
| 500 | { |
| 501 | int i, j, idx; |
| 502 | int lowest_common_cas = 0; |
Stefan Reinauer | de3206a | 2010-02-22 06:09:43 +0000 | [diff] [blame] | 503 | int max_ram_speed = 0; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 504 | |
| 505 | const u8 ddr2_speeds_table[] = { |
| 506 | 0x50, 0x60, /* DDR2 400: tCLK = 5.0ns tAC = 0.6ns */ |
| 507 | 0x3d, 0x50, /* DDR2 533: tCLK = 3.75ns tAC = 0.5ns */ |
| 508 | 0x30, 0x45, /* DDR2 667: tCLK = 3.0ns tAC = 0.45ns */ |
| 509 | }; |
| 510 | |
| 511 | const u8 spd_lookup_table[] = { |
| 512 | SPD_MIN_CYCLE_TIME_AT_CAS_MAX, SPD_ACCESS_TIME_FROM_CLOCK, |
| 513 | SPD_SDRAM_CYCLE_TIME_2ND, SPD_ACCESS_TIME_FROM_CLOCK_2ND, |
| 514 | SPD_SDRAM_CYCLE_TIME_3RD, SPD_ACCESS_TIME_FROM_CLOCK_3RD |
| 515 | }; |
| 516 | |
| 517 | switch (sdram_capabilities_max_supported_memory_frequency()) { |
| 518 | case 400: max_ram_speed = 0; break; |
| 519 | case 533: max_ram_speed = 1; break; |
| 520 | case 667: max_ram_speed = 2; break; |
| 521 | } |
| 522 | |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 523 | if (fsbclk() == 533) |
| 524 | max_ram_speed = 1; |
| 525 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 526 | sysinfo->memory_frequency = 0; |
| 527 | sysinfo->cas = 0; |
| 528 | |
| 529 | if (cas_mask & SPD_CAS_LATENCY_DDR2_3) { |
| 530 | lowest_common_cas = 3; |
| 531 | } else if (cas_mask & SPD_CAS_LATENCY_DDR2_4) { |
| 532 | lowest_common_cas = 4; |
| 533 | } else if (cas_mask & SPD_CAS_LATENCY_DDR2_5) { |
| 534 | lowest_common_cas = 5; |
| 535 | } |
| 536 | PRINTK_DEBUG("lowest common cas = %d\n", lowest_common_cas); |
| 537 | |
| 538 | for (j = max_ram_speed; j>=0; j--) { |
| 539 | int freq_cas_mask = cas_mask; |
| 540 | |
| 541 | PRINTK_DEBUG("Probing Speed %d\n", j); |
| 542 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 543 | int device = get_dimm_spd_address(sysinfo, i); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 544 | int current_cas_mask; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 545 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 546 | PRINTK_DEBUG(" DIMM: %d\n", i); |
| 547 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) { |
| 548 | continue; |
| 549 | } |
| 550 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 551 | current_cas_mask = spd_read_byte(device, SPD_ACCEPTABLE_CAS_LATENCIES); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 552 | |
| 553 | while (current_cas_mask) { |
| 554 | int highest_supported_cas = 0, current_cas = 0; |
| 555 | PRINTK_DEBUG(" Current CAS mask: %04x; ", current_cas_mask); |
| 556 | if (current_cas_mask & SPD_CAS_LATENCY_DDR2_5) { |
| 557 | highest_supported_cas = 5; |
| 558 | } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_4) { |
| 559 | highest_supported_cas = 4; |
| 560 | } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_3) { |
| 561 | highest_supported_cas = 3; |
Stefan Reinauer | 2b9070a | 2010-12-11 22:12:32 +0000 | [diff] [blame] | 562 | } else { |
| 563 | die("Invalid max. CAS.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 564 | } |
| 565 | if (current_cas_mask & SPD_CAS_LATENCY_DDR2_3) { |
| 566 | current_cas = 3; |
| 567 | } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_4) { |
| 568 | current_cas = 4; |
| 569 | } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_5) { |
| 570 | current_cas = 5; |
Stefan Reinauer | 2b9070a | 2010-12-11 22:12:32 +0000 | [diff] [blame] | 571 | } else { |
| 572 | die("Invalid CAS.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | idx = highest_supported_cas - current_cas; |
| 576 | PRINTK_DEBUG("idx=%d, ", idx); |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 577 | PRINTK_DEBUG("tCLK=%x, ", spd_read_byte(device, spd_lookup_table[2*idx])); |
| 578 | PRINTK_DEBUG("tAC=%x", spd_read_byte(device, spd_lookup_table[(2*idx)+1])); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 579 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 580 | if (spd_read_byte(device, spd_lookup_table[2*idx]) <= ddr2_speeds_table[2*j] && |
| 581 | spd_read_byte(device, spd_lookup_table[(2*idx)+1]) <= ddr2_speeds_table[(2*j)+1]) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 582 | PRINTK_DEBUG(": OK\n"); |
| 583 | break; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 584 | } |
| 585 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 586 | PRINTK_DEBUG(": Not fast enough!\n"); |
| 587 | |
| 588 | current_cas_mask &= ~(1 << (current_cas)); |
| 589 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 590 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 591 | freq_cas_mask &= current_cas_mask; |
| 592 | if (!current_cas_mask) { |
| 593 | PRINTK_DEBUG(" No valid CAS for this speed on DIMM %d\n", i); |
| 594 | break; |
| 595 | } |
| 596 | } |
| 597 | PRINTK_DEBUG(" freq_cas_mask for speed %d: %04x\n", j, freq_cas_mask); |
| 598 | if (freq_cas_mask) { |
| 599 | switch (j) { |
| 600 | case 0: sysinfo->memory_frequency = 400; break; |
| 601 | case 1: sysinfo->memory_frequency = 533; break; |
| 602 | case 2: sysinfo->memory_frequency = 667; break; |
| 603 | } |
| 604 | if (freq_cas_mask & SPD_CAS_LATENCY_DDR2_3) { |
| 605 | sysinfo->cas = 3; |
| 606 | } else if (freq_cas_mask & SPD_CAS_LATENCY_DDR2_4) { |
| 607 | sysinfo->cas = 4; |
| 608 | } else if (freq_cas_mask & SPD_CAS_LATENCY_DDR2_5) { |
| 609 | sysinfo->cas = 5; |
| 610 | } |
| 611 | break; |
| 612 | } |
| 613 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 614 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 615 | if (sysinfo->memory_frequency && sysinfo->cas) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 616 | printk(BIOS_DEBUG, "Memory will be driven at %dMHz with CAS=%d clocks\n", |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 617 | sysinfo->memory_frequency, sysinfo->cas); |
| 618 | } else { |
| 619 | die("Could not find common memory frequency and CAS\n"); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | static void sdram_detect_smallest_tRAS(struct sys_info * sysinfo) |
| 624 | { |
| 625 | int i; |
| 626 | int tRAS_time; |
| 627 | int tRAS_cycles; |
| 628 | int freq_multiplier = 0; |
| 629 | |
| 630 | switch (sysinfo->memory_frequency) { |
| 631 | case 400: freq_multiplier = 0x14; break; /* 5ns */ |
| 632 | case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ |
| 633 | case 667: freq_multiplier = 0x0c; break; /* 3ns */ |
| 634 | } |
| 635 | |
| 636 | tRAS_cycles = 4; /* 4 clocks minimum */ |
| 637 | tRAS_time = tRAS_cycles * freq_multiplier; |
| 638 | |
| 639 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 640 | u8 reg8; |
| 641 | |
| 642 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 643 | continue; |
| 644 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 645 | reg8 = spd_read_byte(get_dimm_spd_address(sysinfo, i), SPD_MIN_ACTIVE_TO_PRECHARGE_DELAY); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 646 | if (!reg8) { |
| 647 | die("Invalid tRAS value.\n"); |
| 648 | } |
| 649 | |
| 650 | while ((tRAS_time >> 2) < reg8) { |
| 651 | tRAS_time += freq_multiplier; |
| 652 | tRAS_cycles++; |
| 653 | } |
| 654 | } |
| 655 | if(tRAS_cycles > 0x18) { |
| 656 | die("DDR-II Module does not support this frequency (tRAS error)\n"); |
| 657 | } |
| 658 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 659 | printk(BIOS_DEBUG, "tRAS = %d cycles\n", tRAS_cycles); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 660 | sysinfo->tras = tRAS_cycles; |
| 661 | } |
| 662 | |
| 663 | static void sdram_detect_smallest_tRP(struct sys_info * sysinfo) |
| 664 | { |
| 665 | int i; |
| 666 | int tRP_time; |
| 667 | int tRP_cycles; |
| 668 | int freq_multiplier = 0; |
| 669 | |
| 670 | switch (sysinfo->memory_frequency) { |
| 671 | case 400: freq_multiplier = 0x14; break; /* 5ns */ |
| 672 | case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ |
| 673 | case 667: freq_multiplier = 0x0c; break; /* 3ns */ |
| 674 | } |
| 675 | |
| 676 | tRP_cycles = 2; /* 2 clocks minimum */ |
| 677 | tRP_time = tRP_cycles * freq_multiplier; |
| 678 | |
| 679 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 680 | u8 reg8; |
| 681 | |
| 682 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 683 | continue; |
| 684 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 685 | reg8 = spd_read_byte(get_dimm_spd_address(sysinfo, i), SPD_MIN_ROW_PRECHARGE_TIME); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 686 | if (!reg8) { |
| 687 | die("Invalid tRP value.\n"); |
| 688 | } |
| 689 | |
| 690 | while (tRP_time < reg8) { |
| 691 | tRP_time += freq_multiplier; |
| 692 | tRP_cycles++; |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | if(tRP_cycles > 6) { |
| 697 | die("DDR-II Module does not support this frequency (tRP error)\n"); |
| 698 | } |
| 699 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 700 | printk(BIOS_DEBUG, "tRP = %d cycles\n", tRP_cycles); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 701 | sysinfo->trp = tRP_cycles; |
| 702 | } |
| 703 | |
| 704 | static void sdram_detect_smallest_tRCD(struct sys_info * sysinfo) |
| 705 | { |
| 706 | int i; |
| 707 | int tRCD_time; |
| 708 | int tRCD_cycles; |
| 709 | int freq_multiplier = 0; |
| 710 | |
| 711 | switch (sysinfo->memory_frequency) { |
| 712 | case 400: freq_multiplier = 0x14; break; /* 5ns */ |
| 713 | case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ |
| 714 | case 667: freq_multiplier = 0x0c; break; /* 3ns */ |
| 715 | } |
| 716 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 717 | tRCD_cycles = 2; /* 2 clocks minimum */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 718 | tRCD_time = tRCD_cycles * freq_multiplier; |
| 719 | |
| 720 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 721 | u8 reg8; |
| 722 | |
| 723 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 724 | continue; |
| 725 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 726 | reg8 = spd_read_byte(get_dimm_spd_address(sysinfo, i), SPD_MIN_RAS_TO_CAS_DELAY); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 727 | if (!reg8) { |
| 728 | die("Invalid tRCD value.\n"); |
| 729 | } |
| 730 | |
| 731 | while (tRCD_time < reg8) { |
| 732 | tRCD_time += freq_multiplier; |
| 733 | tRCD_cycles++; |
| 734 | } |
| 735 | } |
| 736 | if(tRCD_cycles > 6) { |
| 737 | die("DDR-II Module does not support this frequency (tRCD error)\n"); |
| 738 | } |
| 739 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 740 | printk(BIOS_DEBUG, "tRCD = %d cycles\n", tRCD_cycles); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 741 | sysinfo->trcd = tRCD_cycles; |
| 742 | } |
| 743 | |
| 744 | static void sdram_detect_smallest_tWR(struct sys_info * sysinfo) |
| 745 | { |
| 746 | int i; |
| 747 | int tWR_time; |
| 748 | int tWR_cycles; |
| 749 | int freq_multiplier = 0; |
| 750 | |
| 751 | switch (sysinfo->memory_frequency) { |
| 752 | case 400: freq_multiplier = 0x14; break; /* 5ns */ |
| 753 | case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ |
| 754 | case 667: freq_multiplier = 0x0c; break; /* 3ns */ |
| 755 | } |
| 756 | |
| 757 | tWR_cycles = 2; /* 2 clocks minimum */ |
| 758 | tWR_time = tWR_cycles * freq_multiplier; |
| 759 | |
| 760 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 761 | u8 reg8; |
| 762 | |
| 763 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 764 | continue; |
| 765 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 766 | reg8 = spd_read_byte(get_dimm_spd_address(sysinfo, i), SPD_WRITE_RECOVERY_TIME); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 767 | if (!reg8) { |
| 768 | die("Invalid tWR value.\n"); |
| 769 | } |
| 770 | |
| 771 | while (tWR_time < reg8) { |
| 772 | tWR_time += freq_multiplier; |
| 773 | tWR_cycles++; |
| 774 | } |
| 775 | } |
| 776 | if(tWR_cycles > 5) { |
| 777 | die("DDR-II Module does not support this frequency (tWR error)\n"); |
| 778 | } |
| 779 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 780 | printk(BIOS_DEBUG, "tWR = %d cycles\n", tWR_cycles); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 781 | sysinfo->twr = tWR_cycles; |
| 782 | } |
| 783 | |
| 784 | static void sdram_detect_smallest_tRFC(struct sys_info * sysinfo) |
| 785 | { |
| 786 | int i, index = 0; |
| 787 | |
| 788 | const u8 tRFC_cycles[] = { |
| 789 | /* 75 105 127.5 */ |
| 790 | 15, 21, 26, /* DDR2-400 */ |
| 791 | 20, 28, 34, /* DDR2-533 */ |
| 792 | 25, 35, 43 /* DDR2-667 */ |
| 793 | }; |
| 794 | |
| 795 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 796 | u8 reg8; |
| 797 | |
| 798 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 799 | continue; |
| 800 | |
| 801 | reg8 = sysinfo->banksize[i*2]; |
| 802 | switch (reg8) { |
| 803 | case 0x04: reg8 = 0; break; |
| 804 | case 0x08: reg8 = 1; break; |
| 805 | case 0x10: reg8 = 2; break; |
| 806 | case 0x20: reg8 = 3; break; |
| 807 | } |
| 808 | |
| 809 | if (sysinfo->dimm[i] == SYSINFO_DIMM_X16DS || sysinfo->dimm[i] == SYSINFO_DIMM_X16SS) |
| 810 | reg8++; |
| 811 | |
| 812 | if (reg8 > 3) { |
| 813 | /* Can this happen? Go back to 127.5ns just to be sure |
| 814 | * we don't run out of the array. This may be wrong |
| 815 | */ |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 816 | printk(BIOS_DEBUG, "DIMM %d is 1Gb x16.. Please report.\n", i); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 817 | reg8 = 3; |
| 818 | } |
| 819 | |
| 820 | if (reg8 > index) |
| 821 | index = reg8; |
| 822 | |
| 823 | } |
| 824 | index--; |
| 825 | switch (sysinfo->memory_frequency) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 826 | case 667: index += 3; /* Fallthrough */ |
| 827 | case 533: index += 3; /* Fallthrough */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 828 | case 400: break; |
| 829 | } |
| 830 | |
| 831 | sysinfo->trfc = tRFC_cycles[index]; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 832 | printk(BIOS_DEBUG, "tRFC = %d cycles\n", tRFC_cycles[index]); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 833 | } |
| 834 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 835 | static void sdram_detect_smallest_refresh(struct sys_info * sysinfo) |
| 836 | { |
| 837 | int i; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 838 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 839 | sysinfo->refresh = 0; |
| 840 | |
| 841 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 842 | int refresh; |
| 843 | |
| 844 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 845 | continue; |
| 846 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 847 | refresh = spd_read_byte(get_dimm_spd_address(sysinfo, i), |
| 848 | SPD_REFRESH) & ~(1 << 7); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 849 | |
| 850 | /* 15.6us */ |
| 851 | if (!refresh) |
| 852 | continue; |
| 853 | |
| 854 | /* Refresh is slower than 15.6us, use 15.6us */ |
| 855 | if (refresh > 2) |
| 856 | continue; |
| 857 | |
| 858 | if (refresh == 2) { |
| 859 | sysinfo->refresh = 1; |
| 860 | break; |
| 861 | } |
| 862 | |
| 863 | die("DDR-II module has unsupported refresh value\n"); |
| 864 | } |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 865 | printk(BIOS_DEBUG, "Refresh: %s\n", sysinfo->refresh?"7.8us":"15.6us"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 866 | } |
| 867 | |
| 868 | static void sdram_verify_burst_length(struct sys_info * sysinfo) |
| 869 | { |
| 870 | int i; |
| 871 | |
| 872 | for (i=0; i<2*DIMM_SOCKETS; i++) { |
| 873 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 874 | continue; |
| 875 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 876 | if (!(spd_read_byte(get_dimm_spd_address(sysinfo, i), |
| 877 | SPD_SUPPORTED_BURST_LENGTHS) & SPD_BURST_LENGTH_8)) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 878 | die("Only DDR-II RAM with burst length 8 is supported by this chipset.\n"); |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | static void sdram_program_dram_width(struct sys_info * sysinfo) |
| 883 | { |
| 884 | u16 c0dramw=0, c1dramw=0; |
| 885 | int idx; |
| 886 | |
| 887 | if (sysinfo->dual_channel) |
| 888 | idx = 2; |
| 889 | else |
| 890 | idx = 1; |
| 891 | |
| 892 | switch (sysinfo->dimm[0]) { |
| 893 | case 0: c0dramw = 0x0000; break; /* x16DS */ |
| 894 | case 1: c0dramw = 0x0001; break; /* x8DS */ |
| 895 | case 2: c0dramw = 0x0000; break; /* x16SS */ |
| 896 | case 3: c0dramw = 0x0005; break; /* x8DDS */ |
| 897 | case 4: c0dramw = 0x0000; break; /* NC */ |
| 898 | } |
| 899 | |
| 900 | switch (sysinfo->dimm[idx]) { |
| 901 | case 0: c1dramw = 0x0000; break; /* x16DS */ |
| 902 | case 1: c1dramw = 0x0010; break; /* x8DS */ |
| 903 | case 2: c1dramw = 0x0000; break; /* x16SS */ |
| 904 | case 3: c1dramw = 0x0050; break; /* x8DDS */ |
| 905 | case 4: c1dramw = 0x0000; break; /* NC */ |
| 906 | } |
| 907 | |
| 908 | if ( !sdram_capabilities_dual_channel() ) { |
| 909 | /* Single Channel */ |
| 910 | c0dramw |= c1dramw; |
| 911 | c1dramw = 0; |
| 912 | } |
| 913 | |
| 914 | MCHBAR16(C0DRAMW) = c0dramw; |
| 915 | MCHBAR16(C1DRAMW) = c1dramw; |
| 916 | } |
| 917 | |
| 918 | static void sdram_write_slew_rates(u32 offset, const u32 *slew_rate_table) |
| 919 | { |
| 920 | int i; |
| 921 | |
| 922 | for (i=0; i<16; i++) |
| 923 | MCHBAR32(offset+(i*4)) = slew_rate_table[i]; |
| 924 | } |
| 925 | |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 926 | static const u32 dq2030[] = { |
| 927 | 0x08070706, 0x0a090908, 0x0d0c0b0a, 0x12100f0e, |
| 928 | 0x1a181614, 0x22201e1c, 0x2a282624, 0x3934302d, |
| 929 | 0x0a090908, 0x0c0b0b0a, 0x0e0d0d0c, 0x1211100f, |
| 930 | 0x19171513, 0x211f1d1b, 0x2d292623, 0x3f393531 |
| 931 | }; |
| 932 | |
| 933 | static const u32 dq2330[] = { |
| 934 | 0x08070706, 0x0a090908, 0x0d0c0b0a, 0x12100f0e, |
| 935 | 0x1a181614, 0x22201e1c, 0x2a282624, 0x3934302d, |
| 936 | 0x0a090908, 0x0c0b0b0a, 0x0e0d0d0c, 0x1211100f, |
| 937 | 0x19171513, 0x211f1d1b, 0x2d292623, 0x3f393531 |
| 938 | }; |
| 939 | |
| 940 | static const u32 cmd2710[] = { |
| 941 | 0x07060605, 0x0f0d0b09, 0x19171411, 0x1f1f1d1b, |
| 942 | 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, |
| 943 | 0x1110100f, 0x0f0d0b09, 0x19171411, 0x1f1f1d1b, |
| 944 | 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f |
| 945 | }; |
| 946 | |
| 947 | static const u32 cmd3210[] = { |
| 948 | 0x0f0d0b0a, 0x17151311, 0x1f1d1b19, 0x1f1f1f1f, |
| 949 | 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, |
| 950 | 0x18171615, 0x1f1f1c1a, 0x1f1f1f1f, 0x1f1f1f1f, |
| 951 | 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f |
| 952 | }; |
| 953 | |
| 954 | static const u32 clk2030[] = { |
| 955 | 0x0e0d0d0c, 0x100f0f0e, 0x100f0e0d, 0x15131211, |
| 956 | 0x1d1b1917, 0x2523211f, 0x2a282927, 0x32302e2c, |
| 957 | 0x17161514, 0x1b1a1918, 0x1f1e1d1c, 0x23222120, |
| 958 | 0x27262524, 0x2d2b2928, 0x3533312f, 0x3d3b3937 |
| 959 | }; |
| 960 | |
| 961 | static const u32 ctl3215[] = { |
| 962 | 0x01010000, 0x03020101, 0x07060504, 0x0b0a0908, |
| 963 | 0x100f0e0d, 0x14131211, 0x18171615, 0x1c1b1a19, |
| 964 | 0x05040403, 0x07060605, 0x0a090807, 0x0f0d0c0b, |
| 965 | 0x14131211, 0x18171615, 0x1c1b1a19, 0x201f1e1d |
| 966 | }; |
| 967 | |
| 968 | static const u32 ctl3220[] = { |
| 969 | 0x05040403, 0x07060505, 0x0e0c0a08, 0x1a171411, |
| 970 | 0x2825221f, 0x35322f2b, 0x3e3e3b38, 0x3e3e3e3e, |
| 971 | 0x09080807, 0x0b0a0a09, 0x0f0d0c0b, 0x1b171311, |
| 972 | 0x2825221f, 0x35322f2b, 0x3e3e3b38, 0x3e3e3e3e |
| 973 | }; |
| 974 | |
| 975 | static const u32 nc[] = { |
| 976 | 0x00000000, 0x00000000, 0x00000000, 0x00000000, |
| 977 | 0x00000000, 0x00000000, 0x00000000, 0x00000000, |
| 978 | 0x00000000, 0x00000000, 0x00000000, 0x00000000, |
| 979 | 0x00000000, 0x00000000, 0x00000000, 0x00000000 |
| 980 | }; |
| 981 | |
| 982 | enum { |
| 983 | DQ2030, |
| 984 | DQ2330, |
| 985 | CMD2710, |
| 986 | CMD3210, |
| 987 | CLK2030, |
| 988 | CTL3215, |
| 989 | CTL3220, |
| 990 | NC, |
| 991 | }; |
| 992 | |
| 993 | static const u8 dual_channel_slew_group_lookup[] = { |
| 994 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 995 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 996 | DQ2030, CMD3210, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 997 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD2710, |
| 998 | DQ2030, CMD3210, NC, CTL3215, NC, CLK2030, NC, NC, |
| 999 | |
| 1000 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 1001 | DQ2030, CMD3210, CTL3215, NC, CLK2030, NC, DQ2030, CMD3210, |
| 1002 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 1003 | DQ2030, CMD3210, CTL3215, NC, CLK2030, NC, DQ2030, CMD2710, |
| 1004 | DQ2030, CMD3210, CTL3215, NC, CLK2030, NC, NC, NC, |
| 1005 | |
| 1006 | DQ2030, CMD3210, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 1007 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 1008 | DQ2030, CMD3210, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 1009 | DQ2030, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD2710, |
| 1010 | DQ2030, CMD3210, NC, CTL3215, NC, CLK2030, NC, NC, |
| 1011 | |
| 1012 | DQ2030, CMD2710, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 1013 | DQ2030, CMD2710, CTL3215, NC, CLK2030, NC, DQ2030, CMD3210, |
| 1014 | DQ2030, CMD2710, CTL3215, CTL3215, CLK2030, CLK2030, DQ2030, CMD3210, |
| 1015 | DQ2030, CMD2710, CTL3215, NC, CLK2030, NC, DQ2030, CMD2710, |
| 1016 | DQ2030, CMD2710, CTL3215, NC, CLK2030, NC, NC, NC, |
| 1017 | |
| 1018 | NC, NC, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 1019 | NC, NC, CTL3215, NC, CLK2030, NC, DQ2030, CMD3210, |
| 1020 | NC, NC, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 1021 | NC, NC, CTL3215, NC, CLK2030, CLK2030, DQ2030, CMD2710 |
| 1022 | }; |
| 1023 | |
| 1024 | static const u8 single_channel_slew_group_lookup[] = { |
| 1025 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1026 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1027 | DQ2330, CMD3210, NC, CTL3215, NC, CLK2030, DQ2330, CMD3210, |
| 1028 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1029 | DQ2330, CMD3210, NC, CTL3215, NC, CLK2030, NC, NC, |
| 1030 | |
| 1031 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1032 | DQ2330, CMD3210, CTL3215, NC, CLK2030, NC, DQ2330, CMD3210, |
| 1033 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1034 | DQ2330, CMD3210, CTL3215, NC, CLK2030, NC, DQ2330, CMD3210, |
| 1035 | DQ2330, CMD3210, CTL3215, NC, CLK2030, NC, NC, NC, |
| 1036 | |
| 1037 | DQ2330, CMD3210, NC, CTL3215, NC, CLK2030, DQ2330, CMD3210, |
| 1038 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1039 | DQ2330, CMD3210, NC, CTL3215, NC, CLK2030, DQ2330, CMD3210, |
| 1040 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1041 | DQ2330, CMD3210, NC, CTL3215, NC, CLK2030, NC, NC, |
| 1042 | |
| 1043 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1044 | DQ2330, CMD3210, CTL3215, NC, CLK2030, NC, DQ2330, CMD3210, |
| 1045 | DQ2330, CMD3210, CTL3215, CTL3215, CLK2030, CLK2030, DQ2330, CMD3210, |
| 1046 | DQ2330, CMD3210, CTL3215, NC, CLK2030, NC, DQ2330, CMD3210, |
| 1047 | DQ2330, CMD3210, CTL3215, NC, CLK2030, NC, NC, NC, |
| 1048 | |
| 1049 | DQ2330, NC, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 1050 | DQ2330, NC, CTL3215, NC, CLK2030, NC, DQ2030, CMD3210, |
| 1051 | DQ2330, NC, NC, CTL3215, NC, CLK2030, DQ2030, CMD3210, |
| 1052 | DQ2330, NC, CTL3215, NC, CLK2030, CLK2030, DQ2030, CMD3210 |
| 1053 | }; |
| 1054 | |
| 1055 | static const u32 *slew_group_lookup(int dual_channel, int index) |
| 1056 | { |
| 1057 | const u8 *slew_group; |
| 1058 | /* Dual Channel needs different tables. */ |
| 1059 | if (dual_channel) |
| 1060 | slew_group = dual_channel_slew_group_lookup; |
| 1061 | else |
| 1062 | slew_group = single_channel_slew_group_lookup; |
| 1063 | |
| 1064 | switch (slew_group[index]) { |
| 1065 | case DQ2030: return dq2030; |
| 1066 | case DQ2330: return dq2330; |
| 1067 | case CMD2710: return cmd2710; |
| 1068 | case CMD3210: return cmd3210; |
| 1069 | case CLK2030: return clk2030; |
| 1070 | case CTL3215: return ctl3215; |
| 1071 | case CTL3220: return ctl3220; |
| 1072 | case NC: return nc; |
| 1073 | } |
| 1074 | |
| 1075 | return nc; |
| 1076 | } |
| 1077 | |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 1078 | #if defined(CONFIG_NORTHBRIDGE_INTEL_I945GM) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1079 | /* Strength multiplier tables */ |
| 1080 | static const u8 dual_channel_strength_multiplier[] = { |
| 1081 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1082 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1083 | 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, |
| 1084 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x22, |
| 1085 | 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, |
| 1086 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1087 | 0x44, 0x11, 0x11, 0x00, 0x44, 0x00, 0x44, 0x11, |
| 1088 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1089 | 0x44, 0x11, 0x11, 0x00, 0x44, 0x00, 0x44, 0x22, |
| 1090 | 0x44, 0x11, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, |
| 1091 | 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, |
| 1092 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1093 | 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, |
| 1094 | 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x22, |
| 1095 | 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, |
| 1096 | 0x44, 0x22, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1097 | 0x44, 0x22, 0x11, 0x00, 0x44, 0x00, 0x44, 0x11, |
| 1098 | 0x44, 0x22, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, |
| 1099 | 0x44, 0x22, 0x11, 0x00, 0x44, 0x00, 0x44, 0x22, |
| 1100 | 0x44, 0x22, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, |
| 1101 | 0x00, 0x00, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, |
| 1102 | 0x00, 0x00, 0x11, 0x00, 0x44, 0x00, 0x44, 0x11, |
| 1103 | 0x00, 0x00, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, |
| 1104 | 0x00, 0x00, 0x11, 0x00, 0x44, 0x44, 0x44, 0x22 |
| 1105 | }; |
| 1106 | |
| 1107 | static const u8 single_channel_strength_multiplier[] = { |
| 1108 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1109 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1110 | 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, |
| 1111 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1112 | 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, |
| 1113 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1114 | 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, |
| 1115 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1116 | 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, |
| 1117 | 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, |
| 1118 | 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, |
| 1119 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1120 | 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, |
| 1121 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1122 | 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, |
| 1123 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1124 | 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, |
| 1125 | 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, |
| 1126 | 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, |
| 1127 | 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, |
| 1128 | 0x33, 0x00, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, |
| 1129 | 0x33, 0x00, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, |
| 1130 | 0x33, 0x00, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, |
| 1131 | 0x33, 0x00, 0x11, 0x00, 0x44, 0x44, 0x33, 0x11 |
| 1132 | }; |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 1133 | #elif defined(CONFIG_NORTHBRIDGE_INTEL_I945GC) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1134 | static const u8 dual_channel_strength_multiplier[] = { |
| 1135 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1136 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1137 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1138 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x33, |
| 1139 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1140 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1141 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1142 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1143 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x33, |
| 1144 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1145 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1146 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1147 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1148 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x33, |
| 1149 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1150 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1151 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1152 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1153 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x33, |
| 1154 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1155 | 0x44, 0x00, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1156 | 0x44, 0x00, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1157 | 0x44, 0x00, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22, |
| 1158 | 0x44, 0x00, 0x00, 0x00, 0x44, 0x44, 0x44, 0x33 |
| 1159 | }; |
| 1160 | |
| 1161 | static const u8 single_channel_strength_multiplier[] = { |
| 1162 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1163 | 0x44, 0x44, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1164 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1165 | 0x44, 0x55, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1166 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1167 | 0x44, 0x44, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1168 | 0x44, 0x55, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1169 | 0x44, 0x44, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1170 | 0x44, 0x88, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1171 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1172 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1173 | 0x44, 0x44, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1174 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1175 | 0x44, 0x55, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1176 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1177 | 0x44, 0x55, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1178 | 0x44, 0x88, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1179 | 0x44, 0x55, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1180 | 0x44, 0x88, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1181 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1182 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1183 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1184 | 0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00, |
| 1185 | 0x44, 0x33, 0x00, 0x00, 0x44, 0x44, 0x44, 0x00 |
| 1186 | }; |
| 1187 | #endif |
| 1188 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1189 | static void sdram_rcomp_buffer_strength_and_slew(struct sys_info *sysinfo) |
| 1190 | { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1191 | const u8 * strength_multiplier; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1192 | int idx, dual_channel; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1193 | |
| 1194 | /* Set Strength Multipliers */ |
| 1195 | |
| 1196 | /* Dual Channel needs different tables. */ |
| 1197 | if (sdram_capabilities_dual_channel()) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1198 | printk(BIOS_DEBUG, "Programming Dual Channel RCOMP\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1199 | strength_multiplier = dual_channel_strength_multiplier; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1200 | dual_channel = 1; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1201 | idx = 5 * sysinfo->dimm[0] + sysinfo->dimm[2]; |
| 1202 | } else { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1203 | printk(BIOS_DEBUG, "Programming Single Channel RCOMP\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1204 | strength_multiplier = single_channel_strength_multiplier; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1205 | dual_channel = 0; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1206 | idx = 5 * sysinfo->dimm[0] + sysinfo->dimm[1]; |
| 1207 | } |
| 1208 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1209 | printk(BIOS_DEBUG, "Table Index: %d\n", idx); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1210 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1211 | MCHBAR8(G1SC) = strength_multiplier[idx * 8 + 0]; |
| 1212 | MCHBAR8(G2SC) = strength_multiplier[idx * 8 + 1]; |
| 1213 | MCHBAR8(G3SC) = strength_multiplier[idx * 8 + 2]; |
| 1214 | MCHBAR8(G4SC) = strength_multiplier[idx * 8 + 3]; |
| 1215 | MCHBAR8(G5SC) = strength_multiplier[idx * 8 + 4]; |
| 1216 | MCHBAR8(G6SC) = strength_multiplier[idx * 8 + 5]; |
| 1217 | MCHBAR8(G7SC) = strength_multiplier[idx * 8 + 6]; |
| 1218 | MCHBAR8(G8SC) = strength_multiplier[idx * 8 + 7]; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1219 | |
| 1220 | /* Channel 0 */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1221 | sdram_write_slew_rates(G1SRPUT, slew_group_lookup(dual_channel, idx * 8 + 0)); |
| 1222 | sdram_write_slew_rates(G2SRPUT, slew_group_lookup(dual_channel, idx * 8 + 1)); |
| 1223 | if ((slew_group_lookup(dual_channel, idx * 8 + 2) != nc) && (sysinfo->package == SYSINFO_PACKAGE_STACKED)) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1224 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1225 | sdram_write_slew_rates(G3SRPUT, ctl3220); |
| 1226 | } else { |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1227 | sdram_write_slew_rates(G3SRPUT, slew_group_lookup(dual_channel, idx * 8 + 2)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1228 | } |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1229 | sdram_write_slew_rates(G4SRPUT, slew_group_lookup(dual_channel, idx * 8 + 3)); |
| 1230 | sdram_write_slew_rates(G5SRPUT, slew_group_lookup(dual_channel, idx * 8 + 4)); |
| 1231 | sdram_write_slew_rates(G6SRPUT, slew_group_lookup(dual_channel, idx * 8 + 5)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1232 | |
| 1233 | /* Channel 1 */ |
| 1234 | if (sysinfo->dual_channel) { |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1235 | sdram_write_slew_rates(G7SRPUT, slew_group_lookup(dual_channel, idx * 8 + 6)); |
| 1236 | sdram_write_slew_rates(G8SRPUT, slew_group_lookup(dual_channel, idx * 8 + 7)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1237 | } else { |
| 1238 | sdram_write_slew_rates(G7SRPUT, nc); |
| 1239 | sdram_write_slew_rates(G8SRPUT, nc); |
| 1240 | } |
| 1241 | } |
| 1242 | |
| 1243 | static void sdram_enable_rcomp(void) |
| 1244 | { |
| 1245 | u32 reg32; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1246 | /* Enable Global Periodic RCOMP */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1247 | udelay(300); |
| 1248 | reg32 = MCHBAR32(GBRCOMPCTL); |
| 1249 | reg32 &= ~(1 << 23); |
| 1250 | MCHBAR32(GBRCOMPCTL) = reg32; |
| 1251 | } |
| 1252 | |
| 1253 | static void sdram_program_dll_timings(struct sys_info *sysinfo) |
| 1254 | { |
| 1255 | u32 chan0dll = 0, chan1dll = 0; |
| 1256 | int i; |
| 1257 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1258 | printk(BIOS_DEBUG, "Programming DLL Timings... \n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1259 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1260 | MCHBAR16(DQSMT) &= ~( (3 << 12) | (1 << 10) | ( 0xf << 0) ); |
| 1261 | MCHBAR16(DQSMT) |= (1 << 13) | (0xc << 0); |
| 1262 | |
| 1263 | /* We drive both channels with the same speed */ |
| 1264 | switch (sysinfo->memory_frequency) { |
| 1265 | case 400: chan0dll = 0x26262626; chan1dll=0x26262626; break; /* 400MHz */ |
| 1266 | case 533: chan0dll = 0x22222222; chan1dll=0x22222222; break; /* 533MHz */ |
| 1267 | case 667: chan0dll = 0x11111111; chan1dll=0x11111111; break; /* 667MHz */ |
| 1268 | } |
| 1269 | |
| 1270 | for (i=0; i < 4; i++) { |
| 1271 | MCHBAR32(C0R0B00DQST + (i * 0x10) + 0) = chan0dll; |
| 1272 | MCHBAR32(C0R0B00DQST + (i * 0x10) + 4) = chan0dll; |
| 1273 | MCHBAR32(C1R0B00DQST + (i * 0x10) + 0) = chan1dll; |
| 1274 | MCHBAR32(C1R0B00DQST + (i * 0x10) + 4) = chan1dll; |
| 1275 | } |
| 1276 | } |
| 1277 | |
| 1278 | static void sdram_force_rcomp(void) |
| 1279 | { |
| 1280 | u32 reg32; |
| 1281 | u8 reg8; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1282 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1283 | reg32 = MCHBAR32(ODTC); |
| 1284 | reg32 |= (1 << 28); |
| 1285 | MCHBAR32(ODTC) = reg32; |
| 1286 | |
| 1287 | reg32 = MCHBAR32(SMSRCTL); |
| 1288 | reg32 |= (1 << 0); |
| 1289 | MCHBAR32(SMSRCTL) = reg32; |
| 1290 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1291 | /* Start initial RCOMP */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1292 | reg32 = MCHBAR32(GBRCOMPCTL); |
| 1293 | reg32 |= (1 << 8); |
| 1294 | MCHBAR32(GBRCOMPCTL) = reg32; |
| 1295 | |
| 1296 | reg8 = i945_silicon_revision(); |
| 1297 | if ((reg8 == 0 && (MCHBAR32(DCC) & (3 << 0)) == 0) || (reg8 == 1)) { |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1298 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1299 | reg32 = MCHBAR32(GBRCOMPCTL); |
| 1300 | reg32 |= (3 << 5); |
| 1301 | MCHBAR32(GBRCOMPCTL) = reg32; |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | static void sdram_initialize_system_memory_io(struct sys_info *sysinfo) |
| 1306 | { |
| 1307 | u8 reg8; |
| 1308 | u32 reg32; |
| 1309 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1310 | printk(BIOS_DEBUG, "Initializing System Memory IO... \n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1311 | /* Enable Data Half Clock Pushout */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1312 | reg8 = MCHBAR8(C0HCTC); |
| 1313 | reg8 &= ~0x1f; |
| 1314 | reg8 |= ( 1 << 0); |
| 1315 | MCHBAR8(C0HCTC) = reg8; |
| 1316 | |
| 1317 | reg8 = MCHBAR8(C1HCTC); |
| 1318 | reg8 &= ~0x1f; |
| 1319 | reg8 |= ( 1 << 0); |
| 1320 | MCHBAR8(C1HCTC) = reg8; |
| 1321 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1322 | MCHBAR16(WDLLBYPMODE) &= ~( (1 << 9) | (1 << 6) | (1 << 4) | (1 << 3) | (1 << 1) ); |
| 1323 | MCHBAR16(WDLLBYPMODE) |= (1 << 8) | (1 << 7) | (1 << 5) | (1 << 2) | (1 << 0); |
| 1324 | |
| 1325 | MCHBAR8(C0WDLLCMC) = 0; |
| 1326 | MCHBAR8(C1WDLLCMC) = 0; |
| 1327 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1328 | /* Program RCOMP Settings */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1329 | sdram_program_dram_width(sysinfo); |
| 1330 | |
| 1331 | sdram_rcomp_buffer_strength_and_slew(sysinfo); |
| 1332 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1333 | /* Indicate that RCOMP programming is done */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1334 | reg32 = MCHBAR32(GBRCOMPCTL); |
| 1335 | reg32 &= ~( (1 << 29) | (1 << 26) | (3 << 21) | (3 << 2) ); |
| 1336 | reg32 |= (3 << 27) | (3 << 0); |
| 1337 | MCHBAR32(GBRCOMPCTL) = reg32; |
| 1338 | |
| 1339 | MCHBAR32(GBRCOMPCTL) |= (1 << 10); |
| 1340 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1341 | /* Program DLL Timings */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1342 | sdram_program_dll_timings(sysinfo); |
| 1343 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1344 | /* Force RCOMP cycle */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1345 | sdram_force_rcomp(); |
| 1346 | } |
| 1347 | |
| 1348 | static void sdram_enable_system_memory_io(struct sys_info *sysinfo) |
| 1349 | { |
| 1350 | u32 reg32; |
| 1351 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1352 | printk(BIOS_DEBUG, "Enabling System Memory IO... \n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1353 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1354 | reg32 = MCHBAR32(RCVENMT); |
| 1355 | reg32 &= ~(0x3f << 6); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1356 | MCHBAR32(RCVENMT) = reg32; /* [11:6] = 0 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1357 | |
| 1358 | reg32 |= (1 << 11) | (1 << 9); |
| 1359 | MCHBAR32(RCVENMT) = reg32; |
| 1360 | |
| 1361 | reg32 = MCHBAR32(DRTST); |
| 1362 | reg32 |= (1 << 3) | (1 << 2); |
| 1363 | MCHBAR32(DRTST) = reg32; |
| 1364 | |
| 1365 | reg32 = MCHBAR32(DRTST); |
| 1366 | reg32 |= (1 << 6) | (1 << 4); |
| 1367 | MCHBAR32(DRTST) = reg32; |
| 1368 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 1369 | asm volatile ("nop; nop;" ::: "memory"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1370 | |
| 1371 | reg32 = MCHBAR32(DRTST); |
| 1372 | |
| 1373 | /* Is channel 0 populated? */ |
| 1374 | if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || |
| 1375 | sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) |
| 1376 | reg32 |= (1 << 7) | (1 << 5); |
| 1377 | else |
| 1378 | reg32 |= (1 << 31); |
| 1379 | |
| 1380 | /* Is channel 1 populated? */ |
| 1381 | if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED || |
| 1382 | sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) |
| 1383 | reg32 |= (1 << 9) | (1 << 8); |
| 1384 | else |
| 1385 | reg32 |= (1 << 30); |
| 1386 | |
| 1387 | MCHBAR32(DRTST) = reg32; |
| 1388 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1389 | /* Activate DRAM Channel IO Buffers */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1390 | if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || |
| 1391 | sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) { |
| 1392 | reg32 = MCHBAR32(C0DRC1); |
| 1393 | reg32 |= (1 << 8); |
| 1394 | MCHBAR32(C0DRC1) = reg32; |
| 1395 | } |
| 1396 | if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED || |
| 1397 | sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) { |
| 1398 | reg32 = MCHBAR32(C1DRC1); |
| 1399 | reg32 |= (1 << 8); |
| 1400 | MCHBAR32(C1DRC1) = reg32; |
| 1401 | } |
| 1402 | } |
| 1403 | |
| 1404 | struct dimm_size { |
| 1405 | unsigned long side1; |
| 1406 | unsigned long side2; |
| 1407 | }; |
| 1408 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 1409 | static struct dimm_size sdram_get_dimm_size(struct sys_info *sysinfo, u16 dimmno) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1410 | { |
| 1411 | /* Calculate the log base 2 size of a DIMM in bits */ |
| 1412 | struct dimm_size sz; |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 1413 | int value, low, rows, columns, device; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1414 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 1415 | device = get_dimm_spd_address(sysinfo, dimmno); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1416 | sz.side1 = 0; |
| 1417 | sz.side2 = 0; |
| 1418 | |
| 1419 | rows = spd_read_byte(device, SPD_NUM_ROWS); /* rows */ |
| 1420 | if (rows < 0) goto hw_err; |
| 1421 | if ((rows & 0xf) == 0) goto val_err; |
| 1422 | sz.side1 += rows & 0xf; |
| 1423 | |
| 1424 | columns = spd_read_byte(device, SPD_NUM_COLUMNS); /* columns */ |
| 1425 | if (columns < 0) goto hw_err; |
| 1426 | if ((columns & 0xf) == 0) goto val_err; |
| 1427 | sz.side1 += columns & 0xf; |
| 1428 | |
| 1429 | value = spd_read_byte(device, SPD_NUM_BANKS_PER_SDRAM); /* banks */ |
| 1430 | if (value < 0) goto hw_err; |
| 1431 | if ((value & 0xff) == 0) goto val_err; |
| 1432 | sz.side1 += log2(value & 0xff); |
| 1433 | |
| 1434 | /* Get the module data width and convert it to a power of two */ |
| 1435 | value = spd_read_byte(device, SPD_MODULE_DATA_WIDTH_MSB); /* (high byte) */ |
| 1436 | if (value < 0) goto hw_err; |
| 1437 | value &= 0xff; |
| 1438 | value <<= 8; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1439 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1440 | low = spd_read_byte(device, SPD_MODULE_DATA_WIDTH_LSB); /* (low byte) */ |
| 1441 | if (low < 0) goto hw_err; |
| 1442 | value = value | (low & 0xff); |
| 1443 | if ((value != 72) && (value != 64)) goto val_err; |
| 1444 | sz.side1 += log2(value); |
| 1445 | |
| 1446 | /* side 2 */ |
| 1447 | value = spd_read_byte(device, SPD_NUM_DIMM_BANKS); /* number of physical banks */ |
| 1448 | |
| 1449 | if (value < 0) goto hw_err; |
| 1450 | value &= 7; |
| 1451 | value++; |
| 1452 | if (value == 1) goto out; |
| 1453 | if (value != 2) goto val_err; |
| 1454 | |
| 1455 | /* Start with the symmetrical case */ |
| 1456 | sz.side2 = sz.side1; |
| 1457 | |
| 1458 | if ((rows & 0xf0) == 0) goto out; /* If symmetrical we are done */ |
| 1459 | |
| 1460 | /* Don't die here, I have not come across any of these to test what |
| 1461 | * actually happens. |
| 1462 | */ |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1463 | printk(BIOS_ERR, "Assymetric DIMMs are not supported by this chipset\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1464 | |
| 1465 | sz.side2 -= (rows & 0x0f); /* Subtract out rows on side 1 */ |
| 1466 | sz.side2 += ((rows >> 4) & 0x0f); /* Add in rows on side 2 */ |
| 1467 | |
| 1468 | sz.side2 -= (columns & 0x0f); /* Subtract out columns on side 1 */ |
| 1469 | sz.side2 += ((columns >> 4) & 0x0f); /* Add in columns on side 2 */ |
| 1470 | |
| 1471 | goto out; |
| 1472 | |
| 1473 | val_err: |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 1474 | die("Bad SPD value\n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1475 | hw_err: |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1476 | /* If a hardware error occurs the spd rom probably does not exist. |
| 1477 | * In this case report that there is no memory |
| 1478 | */ |
| 1479 | sz.side1 = 0; |
| 1480 | sz.side2 = 0; |
| 1481 | out: |
| 1482 | return sz; |
| 1483 | } |
| 1484 | |
| 1485 | static void sdram_detect_dimm_size(struct sys_info * sysinfo) |
| 1486 | { |
| 1487 | int i; |
| 1488 | |
| 1489 | for(i = 0; i < 2 * DIMM_SOCKETS; i++) { |
| 1490 | struct dimm_size sz; |
| 1491 | |
| 1492 | sysinfo->banksize[i * 2] = 0; |
| 1493 | sysinfo->banksize[(i * 2) + 1] = 0; |
| 1494 | |
| 1495 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 1496 | continue; |
| 1497 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 1498 | sz = sdram_get_dimm_size(sysinfo, i); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1499 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 1500 | sysinfo->banks[i] = spd_read_byte(get_dimm_spd_address(sysinfo, i), |
| 1501 | SPD_NUM_BANKS_PER_SDRAM); /* banks */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1502 | |
| 1503 | if (sz.side1 < 30) |
| 1504 | die("DDR-II rank size smaller than 128MB is not supported.\n"); |
| 1505 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1506 | sysinfo->banksize[i * 2] = 1 << (sz.side1 - 28); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1507 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1508 | printk(BIOS_DEBUG, "DIMM %d side 0 = %d MB\n", i, sysinfo->banksize[i * 2] * 32 ); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1509 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1510 | if (!sz.side2) |
| 1511 | continue; |
| 1512 | |
| 1513 | /* If there is a second side, it has to have at least 128M, too */ |
| 1514 | if (sz.side2 < 30) |
| 1515 | die("DDR-II rank size smaller than 128MB is not supported.\n"); |
| 1516 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1517 | sysinfo->banksize[(i * 2) + 1] = 1 << (sz.side2 - 28); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1518 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1519 | printk(BIOS_DEBUG, "DIMM %d side 1 = %d MB\n", i, sysinfo->banksize[(i * 2) + 1] * 32); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | static int sdram_program_row_boundaries(struct sys_info *sysinfo) |
| 1524 | { |
| 1525 | int i; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1526 | int cum0, cum1, tolud, tom; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1527 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1528 | printk(BIOS_DEBUG, "Setting RAM size... \n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1529 | |
| 1530 | cum0 = 0; |
| 1531 | for(i = 0; i < 2 * DIMM_SOCKETS; i++) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1532 | cum0 += sysinfo->banksize[i]; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1533 | MCHBAR8(C0DRB0+i) = cum0; |
| 1534 | } |
| 1535 | |
| 1536 | /* Assume we continue in Channel 1 where we stopped in Channel 0 */ |
| 1537 | cum1 = cum0; |
| 1538 | |
| 1539 | /* Exception: Interleaved starts from the beginning */ |
| 1540 | if (sysinfo->interleaved) |
| 1541 | cum1 = 0; |
| 1542 | |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1543 | #if 0 |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1544 | /* Exception: Channel 1 is not populated. C1DRB stays zero */ |
| 1545 | if (sysinfo->dimm[2] == SYSINFO_DIMM_NOT_POPULATED && |
| 1546 | sysinfo->dimm[3] == SYSINFO_DIMM_NOT_POPULATED) |
| 1547 | cum1 = 0; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1548 | #endif |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1549 | |
| 1550 | for(i = 0; i < 2 * DIMM_SOCKETS; i++) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1551 | cum1 += sysinfo->banksize[i + 4]; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1552 | MCHBAR8(C1DRB0+i) = cum1; |
| 1553 | } |
| 1554 | |
| 1555 | /* Set TOLUD Top Of Low Usable DRAM */ |
| 1556 | if (sysinfo->interleaved) |
| 1557 | tolud = (cum0 + cum1) << 1; |
| 1558 | else |
| 1559 | tolud = (cum1 ? cum1 : cum0) << 1; |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 1560 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1561 | /* The TOM register has a different format */ |
| 1562 | tom = tolud >> 3; |
| 1563 | |
| 1564 | /* Limit the value of TOLUD to leave some space for PCI memory. */ |
| 1565 | if (tolud > 0xd0) |
| 1566 | tolud = 0xd0; /* 3.25GB : 0.75GB */ |
| 1567 | |
| 1568 | pci_write_config8(PCI_DEV(0,0,0), TOLUD, tolud); |
| 1569 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1570 | printk(BIOS_DEBUG, "C0DRB = 0x%08x\n", MCHBAR32(C0DRB0)); |
| 1571 | printk(BIOS_DEBUG, "C1DRB = 0x%08x\n", MCHBAR32(C1DRB0)); |
| 1572 | printk(BIOS_DEBUG, "TOLUD = 0x%04x\n", pci_read_config8(PCI_DEV(0,0,0), TOLUD)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1573 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1574 | pci_write_config16(PCI_DEV(0,0,0), TOM, tom); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1575 | |
| 1576 | return 0; |
| 1577 | } |
| 1578 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1579 | static int sdram_set_row_attributes(struct sys_info *sysinfo) |
| 1580 | { |
| 1581 | int i, value; |
| 1582 | u16 dra0=0, dra1=0, dra = 0; |
| 1583 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1584 | printk(BIOS_DEBUG, "Setting row attributes... \n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1585 | for(i=0; i < 2 * DIMM_SOCKETS; i++) { |
| 1586 | u16 device; |
| 1587 | u8 columnsrows; |
| 1588 | |
| 1589 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) { |
| 1590 | continue; |
| 1591 | } |
| 1592 | |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 1593 | device = get_dimm_spd_address(sysinfo, i); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1594 | |
| 1595 | value = spd_read_byte(device, SPD_NUM_ROWS); /* rows */ |
| 1596 | columnsrows = (value & 0x0f); |
| 1597 | |
| 1598 | value = spd_read_byte(device, SPD_NUM_COLUMNS); /* columns */ |
| 1599 | columnsrows |= (value & 0xf) << 4; |
| 1600 | |
| 1601 | switch (columnsrows) { |
| 1602 | case 0x9d: dra = 2; break; |
| 1603 | case 0xad: dra = 3; break; |
| 1604 | case 0xbd: dra = 4; break; |
| 1605 | case 0xae: dra = 3; break; |
| 1606 | case 0xbe: dra = 4; break; |
| 1607 | default: die("Unsupported Rows/Columns. (DRA)"); |
| 1608 | } |
| 1609 | |
| 1610 | /* Double Sided DIMMs? */ |
| 1611 | if (sysinfo->banksize[(2 * i) + 1] != 0) { |
| 1612 | dra = (dra << 4) | dra; |
| 1613 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1614 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1615 | if (i < DIMM_SOCKETS) |
| 1616 | dra0 |= (dra << (i*8)); |
| 1617 | else |
| 1618 | dra1 |= (dra << ((i - DIMM_SOCKETS)*8)); |
| 1619 | } |
| 1620 | |
| 1621 | MCHBAR16(C0DRA0) = dra0; |
| 1622 | MCHBAR16(C1DRA0) = dra1; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1623 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1624 | printk(BIOS_DEBUG, "C0DRA = 0x%04x\n", dra0); |
| 1625 | printk(BIOS_DEBUG, "C1DRA = 0x%04x\n", dra1); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1626 | |
| 1627 | return 0; |
| 1628 | } |
| 1629 | |
| 1630 | static void sdram_set_bank_architecture(struct sys_info *sysinfo) |
| 1631 | { |
| 1632 | u32 off32; |
| 1633 | int i; |
| 1634 | |
| 1635 | MCHBAR16(C1BNKARC) &= 0xff00; |
| 1636 | MCHBAR16(C0BNKARC) &= 0xff00; |
| 1637 | |
| 1638 | off32 = C0BNKARC; |
| 1639 | for (i=0; i < 2 * DIMM_SOCKETS; i++) { |
| 1640 | /* Switch to second channel */ |
| 1641 | if (i == DIMM_SOCKETS) |
| 1642 | off32 = C1BNKARC; |
| 1643 | |
| 1644 | if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) |
| 1645 | continue; |
| 1646 | |
| 1647 | if (sysinfo->banks[i] != 8) |
| 1648 | continue; |
| 1649 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1650 | printk(BIOS_SPEW, "DIMM%d has 8 banks.\n", i); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1651 | |
| 1652 | if (i & 1) |
| 1653 | MCHBAR16(off32) |= 0x50; |
| 1654 | else |
| 1655 | MCHBAR16(off32) |= 0x05; |
| 1656 | } |
| 1657 | } |
| 1658 | |
| 1659 | #define REFRESH_7_8US 1 |
| 1660 | #define REFRESH_15_6US 0 |
| 1661 | static void sdram_program_refresh_rate(struct sys_info *sysinfo) |
| 1662 | { |
| 1663 | u32 reg32; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1664 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1665 | if (sysinfo->refresh == REFRESH_7_8US) { |
| 1666 | reg32 = (2 << 8); /* Refresh enabled at 7.8us */ |
| 1667 | } else { |
| 1668 | reg32 = (1 << 8); /* Refresh enabled at 15.6us */ |
| 1669 | } |
| 1670 | |
| 1671 | MCHBAR32(C0DRC0) &= ~(7 << 8); |
| 1672 | MCHBAR32(C0DRC0) |= reg32; |
| 1673 | |
| 1674 | MCHBAR32(C1DRC0) &= ~(7 << 8); |
| 1675 | MCHBAR32(C1DRC0) |= reg32; |
| 1676 | } |
| 1677 | |
| 1678 | static void sdram_program_cke_tristate(struct sys_info *sysinfo) |
| 1679 | { |
| 1680 | u32 reg32; |
| 1681 | int i; |
| 1682 | |
| 1683 | reg32 = MCHBAR32(C0DRC1); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1684 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1685 | for (i=0; i < 4; i++) { |
| 1686 | if (sysinfo->banksize[i] == 0) { |
| 1687 | reg32 |= (1 << (16 + i)); |
| 1688 | } |
| 1689 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1690 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1691 | reg32 |= (1 << 12); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1692 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1693 | reg32 |= (1 << 11); |
| 1694 | MCHBAR32(C0DRC1) = reg32; |
| 1695 | |
| 1696 | /* Do we have to do this if we're in Single Channel Mode? */ |
| 1697 | reg32 = MCHBAR32(C1DRC1); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1698 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1699 | for (i=4; i < 8; i++) { |
| 1700 | if (sysinfo->banksize[i] == 0) { |
| 1701 | reg32 |= (1 << (12 + i)); |
| 1702 | } |
| 1703 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1704 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1705 | reg32 |= (1 << 12); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1706 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1707 | reg32 |= (1 << 11); |
| 1708 | MCHBAR32(C1DRC1) = reg32; |
| 1709 | } |
| 1710 | |
| 1711 | static void sdram_program_odt_tristate(struct sys_info *sysinfo) |
| 1712 | { |
| 1713 | u32 reg32; |
| 1714 | int i; |
| 1715 | |
| 1716 | reg32 = MCHBAR32(C0DRC2); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1717 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1718 | for (i=0; i < 4; i++) { |
| 1719 | if (sysinfo->banksize[i] == 0) { |
| 1720 | reg32 |= (1 << (24 + i)); |
| 1721 | } |
| 1722 | } |
| 1723 | MCHBAR32(C0DRC2) = reg32; |
| 1724 | |
| 1725 | reg32 = MCHBAR32(C1DRC2); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1726 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1727 | for (i=4; i < 8; i++) { |
| 1728 | if (sysinfo->banksize[i] == 0) { |
| 1729 | reg32 |= (1 << (20 + i)); |
| 1730 | } |
| 1731 | } |
| 1732 | MCHBAR32(C1DRC2) = reg32; |
| 1733 | } |
| 1734 | |
| 1735 | static void sdram_set_timing_and_control(struct sys_info *sysinfo) |
| 1736 | { |
| 1737 | u32 reg32, off32; |
| 1738 | u32 tWTR; |
| 1739 | u32 temp_drt; |
| 1740 | int i, page_size; |
| 1741 | |
| 1742 | static const u8 const drt0_table[] = { |
| 1743 | /* CL 3, 4, 5 */ |
| 1744 | 3, 4, 5, /* FSB533/400, DDR533/400 */ |
| 1745 | 4, 5, 6, /* FSB667, DDR533/400 */ |
| 1746 | 4, 5, 6, /* FSB667, DDR667 */ |
| 1747 | }; |
| 1748 | |
| 1749 | static const u8 const cas_table[] = { |
| 1750 | 2, 1, 0, 3 |
| 1751 | }; |
| 1752 | |
| 1753 | reg32 = MCHBAR32(C0DRC0); |
| 1754 | reg32 |= (1 << 2); /* Burst Length 8 */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1755 | reg32 &= ~( (1 << 13) | (1 << 12) ); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1756 | MCHBAR32(C0DRC0) = reg32; |
| 1757 | |
| 1758 | reg32 = MCHBAR32(C1DRC0); |
| 1759 | reg32 |= (1 << 2); /* Burst Length 8 */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1760 | reg32 &= ~( (1 << 13) | (1 << 12) ); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1761 | MCHBAR32(C1DRC0) = reg32; |
| 1762 | |
| 1763 | if (!sysinfo->dual_channel && sysinfo->dimm[1] != |
| 1764 | SYSINFO_DIMM_NOT_POPULATED) { |
| 1765 | reg32 = MCHBAR32(C0DRC0); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1766 | reg32 |= (1 << 15); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1767 | MCHBAR32(C0DRC0) = reg32; |
| 1768 | } |
| 1769 | |
| 1770 | sdram_program_refresh_rate(sysinfo); |
| 1771 | |
| 1772 | sdram_program_cke_tristate(sysinfo); |
| 1773 | |
| 1774 | sdram_program_odt_tristate(sysinfo); |
| 1775 | |
| 1776 | /* Calculate DRT0 */ |
| 1777 | |
| 1778 | temp_drt = 0; |
| 1779 | |
| 1780 | /* B2B Write Precharge (same bank) = CL-1 + BL/2 + tWR */ |
| 1781 | reg32 = (sysinfo->cas - 1) + (BURSTLENGTH / 2) + sysinfo->twr; |
| 1782 | temp_drt |= (reg32 << 28); |
| 1783 | |
| 1784 | /* Write Auto Precharge (same bank) = CL-1 + BL/2 + tWR + tRP */ |
| 1785 | reg32 += sysinfo->trp; |
| 1786 | temp_drt |= (reg32 << 4); |
| 1787 | |
| 1788 | if (sysinfo->memory_frequency == 667) { |
| 1789 | tWTR = 3; /* 667MHz */ |
| 1790 | } else { |
| 1791 | tWTR = 2; /* 400 and 533 */ |
| 1792 | } |
| 1793 | |
| 1794 | /* B2B Write to Read Command Spacing */ |
| 1795 | reg32 = (sysinfo->cas - 1) + (BURSTLENGTH / 2) + tWTR; |
| 1796 | temp_drt |= (reg32 << 24); |
| 1797 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1798 | /* CxDRT0 [23:22], [21:20], [19:18] [16] have fixed values */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1799 | temp_drt |= ( (1 << 22) | (3 << 20) | (1 << 18) | (0 << 16) ); |
| 1800 | |
| 1801 | /* Program Write Auto Precharge to Activate */ |
| 1802 | off32 = 0; |
| 1803 | if (sysinfo->fsb_frequency == 667) { /* 667MHz FSB */ |
| 1804 | off32 += 3; |
| 1805 | } |
| 1806 | if (sysinfo->memory_frequency == 667) { |
| 1807 | off32 += 3; |
| 1808 | } |
| 1809 | off32 += sysinfo->cas - 3; |
| 1810 | reg32 = drt0_table[off32]; |
| 1811 | temp_drt |= (reg32 << 11); |
| 1812 | |
| 1813 | /* Read Auto Precharge to Activate */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1814 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1815 | temp_drt |= (8 << 0); |
| 1816 | |
| 1817 | MCHBAR32(C0DRT0) = temp_drt; |
| 1818 | MCHBAR32(C1DRT0) = temp_drt; |
| 1819 | |
| 1820 | /* Calculate DRT1 */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1821 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1822 | temp_drt = MCHBAR32(C0DRT1) & 0x00020088; |
| 1823 | |
| 1824 | /* DRAM RASB Precharge */ |
| 1825 | temp_drt |= (sysinfo->trp - 2) << 0; |
| 1826 | |
| 1827 | /* DRAM RASB to CASB Delay */ |
| 1828 | temp_drt |= (sysinfo->trcd - 2) << 4; |
| 1829 | |
| 1830 | /* CASB Latency */ |
| 1831 | temp_drt |= (cas_table[sysinfo->cas - 3]) << 8; |
| 1832 | |
| 1833 | /* Refresh Cycle Time */ |
| 1834 | temp_drt |= (sysinfo->trfc) << 10; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1835 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1836 | /* Pre-All to Activate Delay */ |
| 1837 | temp_drt |= (0 << 16); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1838 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1839 | /* Precharge to Precharge Delay stays at 1 clock */ |
| 1840 | temp_drt |= (0 << 18); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1841 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1842 | /* Activate to Precharge Delay */ |
| 1843 | temp_drt |= (sysinfo->tras << 19); |
| 1844 | |
| 1845 | /* Read to Precharge (tRTP) */ |
| 1846 | if (sysinfo->memory_frequency == 667) { |
| 1847 | temp_drt |= (1 << 28); |
| 1848 | } else { |
| 1849 | temp_drt |= (0 << 28); |
| 1850 | } |
| 1851 | |
| 1852 | /* Determine page size */ |
| 1853 | reg32 = 0; |
| 1854 | page_size = 1; /* Default: 1k pagesize */ |
| 1855 | for (i=0; i< 2*DIMM_SOCKETS; i++) { |
| 1856 | if (sysinfo->dimm[i] == SYSINFO_DIMM_X16DS || |
| 1857 | sysinfo->dimm[i] == SYSINFO_DIMM_X16SS) |
| 1858 | page_size = 2; /* 2k pagesize */ |
| 1859 | } |
| 1860 | |
| 1861 | if (sysinfo->memory_frequency == 533 && page_size == 2) { |
| 1862 | reg32 = 1; |
| 1863 | } |
| 1864 | if (sysinfo->memory_frequency == 667) { |
| 1865 | reg32 = page_size; |
| 1866 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1867 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1868 | temp_drt |= (reg32 << 30); |
| 1869 | |
| 1870 | MCHBAR32(C0DRT1) = temp_drt; |
| 1871 | MCHBAR32(C1DRT1) = temp_drt; |
| 1872 | |
| 1873 | /* Program DRT2 */ |
| 1874 | reg32 = MCHBAR32(C0DRT2); |
| 1875 | reg32 &= ~(1 << 8); |
| 1876 | MCHBAR32(C0DRT2) = reg32; |
| 1877 | |
| 1878 | reg32 = MCHBAR32(C1DRT2); |
| 1879 | reg32 &= ~(1 << 8); |
| 1880 | MCHBAR32(C1DRT2) = reg32; |
| 1881 | |
| 1882 | /* Calculate DRT3 */ |
| 1883 | temp_drt = MCHBAR32(C0DRT3) & ~0x07ffffff; |
| 1884 | |
| 1885 | /* Get old tRFC value */ |
| 1886 | reg32 = MCHBAR32(C0DRT1) >> 10; |
| 1887 | reg32 &= 0x3f; |
| 1888 | |
| 1889 | /* 788nS - tRFC */ |
| 1890 | switch (sysinfo->memory_frequency) { |
| 1891 | case 400: /* 5nS */ |
| 1892 | reg32 = ((78800 / 500) - reg32) & 0x1ff; |
| 1893 | reg32 |= (0x8c << 16) | (0x0c << 10); /* 1 us */ |
| 1894 | break; |
| 1895 | case 533: /* 3.75nS */ |
| 1896 | reg32 = ((78800 / 375) - reg32) & 0x1ff; |
| 1897 | reg32 |= (0xba << 16) | (0x10 << 10); /* 1 us */ |
| 1898 | break; |
| 1899 | case 667: /* 3nS */ |
| 1900 | reg32 = ((78800 / 300) - reg32) & 0x1ff; |
| 1901 | reg32 |= (0xe9 << 16) | (0x14 << 10); /* 1 us */ |
| 1902 | break; |
| 1903 | } |
| 1904 | |
| 1905 | temp_drt |= reg32; |
| 1906 | |
| 1907 | MCHBAR32(C0DRT3) = temp_drt; |
| 1908 | MCHBAR32(C1DRT3) = temp_drt; |
| 1909 | } |
| 1910 | |
| 1911 | static void sdram_set_channel_mode(struct sys_info *sysinfo) |
| 1912 | { |
| 1913 | u32 reg32; |
| 1914 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1915 | printk(BIOS_DEBUG, "Setting mode of operation for memory channels..."); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1916 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1917 | if (sdram_capabilities_interleave() && |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1918 | ( ( sysinfo->banksize[0] + sysinfo->banksize[1] + |
| 1919 | sysinfo->banksize[2] + sysinfo->banksize[3] ) == |
| 1920 | ( sysinfo->banksize[4] + sysinfo->banksize[5] + |
| 1921 | sysinfo->banksize[6] + sysinfo->banksize[7] ) ) ) { |
| 1922 | /* Both channels equipped with DIMMs of the same size */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1923 | sysinfo->interleaved = 1; |
| 1924 | } else { |
| 1925 | sysinfo->interleaved = 0; |
| 1926 | } |
| 1927 | |
| 1928 | reg32 = MCHBAR32(DCC); |
| 1929 | reg32 &= ~(7 << 0); |
| 1930 | |
| 1931 | if(sysinfo->interleaved) { |
| 1932 | /* Dual Channel Interleaved */ |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1933 | printk(BIOS_DEBUG, "Dual Channel Interleaved.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1934 | reg32 |= (1 << 1); |
| 1935 | } else if (sysinfo->dimm[0] == SYSINFO_DIMM_NOT_POPULATED && |
| 1936 | sysinfo->dimm[1] == SYSINFO_DIMM_NOT_POPULATED) { |
| 1937 | /* Channel 1 only */ |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1938 | printk(BIOS_DEBUG, "Single Channel 1 only.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1939 | reg32 |= (1 << 2); |
| 1940 | } else if (sdram_capabilities_dual_channel() && sysinfo->dimm[2] != |
| 1941 | SYSINFO_DIMM_NOT_POPULATED) { |
| 1942 | /* Dual Channel Assymetric */ |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1943 | printk(BIOS_DEBUG, "Dual Channel Assymetric.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1944 | reg32 |= (1 << 0); |
| 1945 | } else { |
| 1946 | /* All bits 0 means Single Channel 0 operation */ |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1947 | printk(BIOS_DEBUG, "Single Channel 0 only.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1948 | } |
| 1949 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 1950 | /* Now disable channel XORing */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1951 | reg32 |= (1 << 10); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1952 | |
| 1953 | MCHBAR32(DCC) = reg32; |
| 1954 | |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 1955 | PRINTK_DEBUG("DCC=0x%08x\n", MCHBAR32(DCC)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1956 | } |
| 1957 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1958 | static void sdram_program_pll_settings(struct sys_info *sysinfo) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1959 | { |
| 1960 | volatile u16 reg16; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1961 | |
| 1962 | MCHBAR32(PLLMON) = 0x80800000; |
| 1963 | |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1964 | sysinfo->fsb_frequency = fsbclk(); |
Peter Stuge | 76d9143 | 2010-10-01 10:02:33 +0000 | [diff] [blame] | 1965 | if (sysinfo->fsb_frequency == 0xffff) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 1966 | die("Unsupported FSB speed"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1967 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1968 | /* Program CPCTL according to FSB speed */ |
| 1969 | /* Only write the lower byte */ |
| 1970 | switch (sysinfo->fsb_frequency) { |
| 1971 | case 400: MCHBAR8(CPCTL) = 0x90; break; /* FSB400 */ |
| 1972 | case 533: MCHBAR8(CPCTL) = 0x95; break; /* FSB533 */ |
| 1973 | case 667: MCHBAR8(CPCTL) = 0x8d; break; /* FSB667 */ |
| 1974 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1975 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1976 | MCHBAR16(CPCTL) &= ~(1 << 11); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1977 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1978 | reg16 = MCHBAR16(CPCTL); /* Read back register to activate settings */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1979 | } |
| 1980 | |
| 1981 | static void sdram_program_graphics_frequency(struct sys_info *sysinfo) |
| 1982 | { |
| 1983 | u8 reg8; |
| 1984 | u16 reg16; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1985 | u8 freq, second_vco, voltage; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1986 | |
| 1987 | #define CRCLK_166MHz 0x00 |
| 1988 | #define CRCLK_200MHz 0x01 |
| 1989 | #define CRCLK_250MHz 0x03 |
| 1990 | #define CRCLK_400MHz 0x05 |
| 1991 | |
| 1992 | #define CDCLK_200MHz 0x00 |
| 1993 | #define CDCLK_320MHz 0x40 |
| 1994 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 1995 | #define VOLTAGE_1_05 0x00 |
| 1996 | #define VOLTAGE_1_50 0x01 |
| 1997 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 1998 | printk(BIOS_DEBUG, "Setting Graphics Frequency... \n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1999 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2000 | printk(BIOS_DEBUG, "FSB: %d MHz ", sysinfo->fsb_frequency); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2001 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2002 | voltage = VOLTAGE_1_05; |
| 2003 | if (MCHBAR32(DFT_STRAP1) & (1 << 20)) |
| 2004 | voltage = VOLTAGE_1_50; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2005 | printk(BIOS_DEBUG, "Voltage: %s ", (voltage==VOLTAGE_1_05)?"1.05V":"1.5V"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2006 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2007 | /* Gate graphics hardware for frequency change */ |
| 2008 | reg8 = pci_read_config16(PCI_DEV(0,2,0), GCFC + 1); |
| 2009 | reg8 = (1<<3) | (1<<1); /* disable crclk, gate cdclk */ |
| 2010 | pci_write_config8(PCI_DEV(0,2,0), GCFC + 1, reg8); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2011 | |
| 2012 | /* Get graphics frequency capabilities */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2013 | reg8 = sdram_capabilities_core_frequencies(); |
| 2014 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2015 | freq = CRCLK_250MHz; |
| 2016 | switch (reg8) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2017 | case GFX_FREQUENCY_CAP_ALL: |
| 2018 | if (voltage == VOLTAGE_1_05) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2019 | freq = CRCLK_250MHz; |
| 2020 | else |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 2021 | freq = CRCLK_400MHz; /* 1.5V requires 400MHz */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2022 | break; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2023 | case GFX_FREQUENCY_CAP_250MHZ: freq = CRCLK_250MHz; break; |
| 2024 | case GFX_FREQUENCY_CAP_200MHZ: freq = CRCLK_200MHz; break; |
| 2025 | case GFX_FREQUENCY_CAP_166MHZ: freq = CRCLK_166MHz; break; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2026 | } |
| 2027 | |
| 2028 | if (freq != CRCLK_400MHz) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2029 | /* What chipset are we? Force 166MHz for GMS */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2030 | reg8 = (pci_read_config8(PCI_DEV(0, 0x00,0), 0xe7) & 0x70) >> 4; |
| 2031 | if (reg8==2) |
| 2032 | freq = CRCLK_166MHz; |
| 2033 | } |
| 2034 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2035 | printk(BIOS_DEBUG, "Render: "); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2036 | switch (freq) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2037 | case CRCLK_166MHz: printk(BIOS_DEBUG, "166Mhz"); break; |
| 2038 | case CRCLK_200MHz: printk(BIOS_DEBUG, "200Mhz"); break; |
| 2039 | case CRCLK_250MHz: printk(BIOS_DEBUG, "250Mhz"); break; |
| 2040 | case CRCLK_400MHz: printk(BIOS_DEBUG, "400Mhz"); break; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2041 | } |
| 2042 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2043 | if (i945_silicon_revision() == 0) { |
| 2044 | sysinfo->mvco4x = 1; |
| 2045 | } else { |
| 2046 | sysinfo->mvco4x = 0; |
| 2047 | } |
| 2048 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2049 | second_vco = 0; |
| 2050 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2051 | if (voltage == VOLTAGE_1_50) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2052 | second_vco = 1; |
| 2053 | } else if ((i945_silicon_revision() > 0) && (freq == CRCLK_250MHz)) { |
| 2054 | u16 mem = sysinfo->memory_frequency; |
| 2055 | u16 fsb = sysinfo->fsb_frequency; |
| 2056 | |
| 2057 | if ( (fsb == 667 && mem == 533) || |
| 2058 | (fsb == 533 && mem == 533) || |
| 2059 | (fsb == 533 && mem == 400)) { |
| 2060 | second_vco = 1; |
| 2061 | } |
| 2062 | |
| 2063 | if (fsb == 667 && mem == 533) |
| 2064 | sysinfo->mvco4x = 1; |
| 2065 | } |
| 2066 | |
| 2067 | if (second_vco) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2068 | sysinfo->clkcfg_bit7=1; |
| 2069 | } else { |
| 2070 | sysinfo->clkcfg_bit7=0; |
| 2071 | } |
| 2072 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2073 | /* Graphics Core Render Clock */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2074 | reg16 = pci_read_config16(PCI_DEV(0,2,0), GCFC); |
| 2075 | reg16 &= ~( (7 << 0) | (1 << 13) ); |
| 2076 | reg16 |= freq; |
| 2077 | pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); |
| 2078 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2079 | /* Graphics Core Display Clock */ |
| 2080 | reg8 = pci_read_config8(PCI_DEV(0,2,0), GCFC); |
| 2081 | reg8 &= ~( (1<<7) | (7<<4) ); |
| 2082 | |
| 2083 | if (voltage == VOLTAGE_1_05) { |
| 2084 | reg8 |= CDCLK_200MHz; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2085 | printk(BIOS_DEBUG, " Display: 200MHz\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2086 | } else { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2087 | reg8 |= CDCLK_320MHz; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2088 | printk(BIOS_DEBUG, " Display: 320MHz\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2089 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2090 | pci_write_config8(PCI_DEV(0,2,0), GCFC, reg8); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2091 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2092 | reg8 = pci_read_config8(PCI_DEV(0,2,0), GCFC + 1); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2093 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2094 | reg8 |= (1<<3) | (1<<1); |
| 2095 | pci_write_config8(PCI_DEV(0,2,0), GCFC + 1, reg8); |
| 2096 | |
| 2097 | reg8 |= 0x0f; |
| 2098 | pci_write_config8(PCI_DEV(0,2,0), GCFC + 1, reg8); |
| 2099 | |
| 2100 | /* Ungate core render and display clocks */ |
| 2101 | reg8 &= 0xf0; |
| 2102 | pci_write_config8(PCI_DEV(0,2,0), GCFC + 1, reg8); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | static void sdram_program_memory_frequency(struct sys_info *sysinfo) |
| 2106 | { |
| 2107 | u32 clkcfg; |
| 2108 | u8 reg8; |
| 2109 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2110 | printk(BIOS_DEBUG, "Setting Memory Frequency... "); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2111 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2112 | clkcfg = MCHBAR32(CLKCFG); |
| 2113 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2114 | printk(BIOS_DEBUG, "CLKCFG=0x%08x, ", clkcfg); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2115 | |
| 2116 | clkcfg &= ~( (1 << 12) | (1 << 7) | ( 7 << 4) ); |
| 2117 | |
| 2118 | if (sysinfo->mvco4x) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2119 | printk(BIOS_DEBUG, "MVCO 4x, "); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2120 | clkcfg &= ~(1 << 12); |
| 2121 | } |
| 2122 | |
| 2123 | if (sysinfo->clkcfg_bit7) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2124 | printk(BIOS_DEBUG, "second VCO, "); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2125 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2126 | clkcfg |= (1 << 7); |
| 2127 | } |
| 2128 | |
| 2129 | switch (sysinfo->memory_frequency) { |
Patrick Georgi | 682ea3c | 2010-04-20 15:52:57 +0000 | [diff] [blame] | 2130 | case 400: clkcfg |= (2 << 4); break; |
| 2131 | case 533: clkcfg |= (3 << 4); break; |
| 2132 | case 667: clkcfg |= (4 << 4); break; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2133 | default: die("Target Memory Frequency Error"); |
| 2134 | } |
| 2135 | |
| 2136 | if (MCHBAR32(CLKCFG) == clkcfg) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2137 | printk(BIOS_DEBUG, "ok (unchanged)\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2138 | return; |
| 2139 | } |
| 2140 | |
| 2141 | MCHBAR32(CLKCFG) = clkcfg; |
| 2142 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2143 | /* Make sure the following code is in the |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2144 | * cache before we execute it. |
| 2145 | */ |
| 2146 | goto cache_code; |
| 2147 | vco_update: |
| 2148 | reg8 = pci_read_config8(PCI_DEV(0,0x1f,0), 0xa2); |
| 2149 | reg8 &= ~(1 << 7); |
| 2150 | pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); |
| 2151 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2152 | clkcfg &= ~(1 << 10); |
| 2153 | MCHBAR32(CLKCFG) = clkcfg; |
| 2154 | clkcfg |= (1 << 10); |
| 2155 | MCHBAR32(CLKCFG) = clkcfg; |
| 2156 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 2157 | asm volatile ( |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2158 | " movl $0x100, %%ecx\n" |
| 2159 | "delay_update:\n" |
| 2160 | " nop\n" |
| 2161 | " nop\n" |
| 2162 | " nop\n" |
| 2163 | " nop\n" |
| 2164 | " loop delay_update\n" |
| 2165 | : /* No outputs */ |
| 2166 | : /* No inputs */ |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 2167 | : "%ecx", "memory" |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2168 | ); |
| 2169 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2170 | clkcfg &= ~(1 << 10); |
| 2171 | MCHBAR32(CLKCFG) = clkcfg; |
| 2172 | |
| 2173 | goto out; |
| 2174 | cache_code: |
| 2175 | goto vco_update; |
| 2176 | out: |
| 2177 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2178 | printk(BIOS_DEBUG, "CLKCFG=0x%08x, ", MCHBAR32(CLKCFG)); |
| 2179 | printk(BIOS_DEBUG, "ok\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2180 | } |
| 2181 | |
| 2182 | static void sdram_program_clock_crossing(void) |
| 2183 | { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2184 | int idx = 0; |
| 2185 | |
| 2186 | /** |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2187 | * We add the indices according to our clocks from CLKCFG. |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2188 | */ |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 2189 | #if defined(CONFIG_NORTHBRIDGE_INTEL_I945GM) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2190 | static const u32 data_clock_crossing[] = { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2191 | 0x00100401, 0x00000000, /* DDR400 FSB400 */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2192 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2193 | 0xffffffff, 0xffffffff, /* nonexistant */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2194 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2195 | 0x08040120, 0x00000000, /* DDR400 FSB533 */ |
| 2196 | 0x00100401, 0x00000000, /* DDR533 FSB533 */ |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 2197 | 0x00010402, 0x00000000, /* DDR667 FSB533 - fake values */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2198 | |
| 2199 | 0x04020120, 0x00000010, /* DDR400 FSB667 */ |
| 2200 | 0x10040280, 0x00000040, /* DDR533 FSB667 */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2201 | 0x00100401, 0x00000000, /* DDR667 FSB667 */ |
| 2202 | |
| 2203 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2204 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2205 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2206 | |
| 2207 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2208 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2209 | 0xffffffff, 0xffffffff, /* nonexistant */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2210 | }; |
| 2211 | |
| 2212 | static const u32 command_clock_crossing[] = { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2213 | 0x04020208, 0x00000000, /* DDR400 FSB400 */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2214 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2215 | 0xffffffff, 0xffffffff, /* nonexistant */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2216 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2217 | 0x00060108, 0x00000000, /* DDR400 FSB533 */ |
| 2218 | 0x04020108, 0x00000000, /* DDR533 FSB533 */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2219 | 0xffffffff, 0xffffffff, /* nonexistant */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2220 | |
| 2221 | 0x00040318, 0x00000000, /* DDR400 FSB667 */ |
| 2222 | 0x04020118, 0x00000000, /* DDR533 FSB667 */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2223 | 0x02010804, 0x00000000, /* DDR667 FSB667 */ |
| 2224 | |
| 2225 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2226 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2227 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2228 | |
| 2229 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2230 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2231 | 0xffffffff, 0xffffffff, /* nonexistant */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2232 | }; |
| 2233 | |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 2234 | #elif defined(CONFIG_NORTHBRIDGE_INTEL_I945GC) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2235 | /* i945 G/P */ |
| 2236 | static const u32 data_clock_crossing[] = { |
| 2237 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2238 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2239 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2240 | |
| 2241 | 0x10080201, 0x00000000, /* DDR400 FSB533 */ |
| 2242 | 0x00100401, 0x00000000, /* DDR533 FSB533 */ |
Patrick Georgi | 682ea3c | 2010-04-20 15:52:57 +0000 | [diff] [blame] | 2243 | 0x00010402, 0x00000000, /* DDR667 FSB533 - fake values */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2244 | |
| 2245 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2246 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2247 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2248 | |
| 2249 | 0x04020108, 0x00000000, /* DDR400 FSB800 */ |
| 2250 | 0x00020108, 0x00000000, /* DDR533 FSB800 */ |
| 2251 | 0x00080201, 0x00000000, /* DDR667 FSB800 */ |
| 2252 | |
| 2253 | 0x00010402, 0x00000000, /* DDR400 FSB1066 */ |
| 2254 | 0x04020108, 0x00000000, /* DDR533 FSB1066 */ |
| 2255 | 0x08040110, 0x00000000, /* DDR667 FSB1066 */ |
| 2256 | }; |
| 2257 | |
| 2258 | static const u32 command_clock_crossing[] = { |
| 2259 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2260 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2261 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2262 | |
| 2263 | 0x00010800, 0x00000402, /* DDR400 FSB533 */ |
| 2264 | 0x01000400, 0x00000200, /* DDR533 FSB533 */ |
Patrick Georgi | 682ea3c | 2010-04-20 15:52:57 +0000 | [diff] [blame] | 2265 | 0x00020904, 0x00000000, /* DDR667 FSB533 - fake values */ |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2266 | |
| 2267 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2268 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2269 | 0xffffffff, 0xffffffff, /* nonexistant */ |
| 2270 | |
| 2271 | 0x02010804, 0x00000000, /* DDR400 FSB800 */ |
| 2272 | 0x00010402, 0x00000000, /* DDR533 FSB800 */ |
| 2273 | 0x04020180, 0x00000008, /* DDR667 FSB800 */ |
| 2274 | |
| 2275 | 0x00020904, 0x00000000, /* DDR400 FSB1066 */ |
| 2276 | 0x02010804, 0x00000000, /* DDR533 FSB1066 */ |
| 2277 | 0x180601c0, 0x00000020, /* DDR667 FSB1066 */ |
| 2278 | }; |
| 2279 | #endif |
| 2280 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2281 | printk(BIOS_DEBUG, "Programming Clock Crossing..."); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2282 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2283 | printk(BIOS_DEBUG, "MEM="); |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2284 | switch (memclk()) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2285 | case 400: printk(BIOS_DEBUG, "400"); idx += 0; break; |
| 2286 | case 533: printk(BIOS_DEBUG, "533"); idx += 2; break; |
| 2287 | case 667: printk(BIOS_DEBUG, "667"); idx += 4; break; |
| 2288 | default: printk(BIOS_DEBUG, "RSVD %x", memclk()); return; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2289 | } |
| 2290 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2291 | printk(BIOS_DEBUG, " FSB="); |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2292 | switch (fsbclk()) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2293 | case 400: printk(BIOS_DEBUG, "400"); idx += 0; break; |
| 2294 | case 533: printk(BIOS_DEBUG, "533"); idx += 6; break; |
| 2295 | case 667: printk(BIOS_DEBUG, "667"); idx += 12; break; |
| 2296 | case 800: printk(BIOS_DEBUG, "800"); idx += 18; break; |
| 2297 | case 1066: printk(BIOS_DEBUG, "1066"); idx += 24; break; |
| 2298 | default: printk(BIOS_DEBUG, "RSVD %x\n", fsbclk()); return; |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2299 | } |
| 2300 | |
| 2301 | if (command_clock_crossing[idx]==0xffffffff) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2302 | printk(BIOS_DEBUG, "Invalid MEM/FSB combination!\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2303 | } |
| 2304 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2305 | MCHBAR32(CCCFT + 0) = command_clock_crossing[idx]; |
| 2306 | MCHBAR32(CCCFT + 4) = command_clock_crossing[idx + 1]; |
| 2307 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2308 | MCHBAR32(C0DCCFT + 0) = data_clock_crossing[idx]; |
| 2309 | MCHBAR32(C0DCCFT + 4) = data_clock_crossing[idx + 1]; |
| 2310 | MCHBAR32(C1DCCFT + 0) = data_clock_crossing[idx]; |
| 2311 | MCHBAR32(C1DCCFT + 4) = data_clock_crossing[idx + 1]; |
| 2312 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2313 | printk(BIOS_DEBUG, "... ok\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2314 | } |
| 2315 | |
| 2316 | static void sdram_disable_fast_dispatch(void) |
| 2317 | { |
| 2318 | u32 reg32; |
| 2319 | |
| 2320 | reg32 = MCHBAR32(FSBPMC3); |
| 2321 | reg32 |= (1 << 1); |
| 2322 | MCHBAR32(FSBPMC3) = reg32; |
| 2323 | |
| 2324 | reg32 = MCHBAR32(SBTEST); |
| 2325 | reg32 |= (3 << 1); |
| 2326 | MCHBAR32(SBTEST) = reg32; |
| 2327 | } |
| 2328 | |
| 2329 | static void sdram_pre_jedec_initialization(void) |
| 2330 | { |
| 2331 | u32 reg32; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2332 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2333 | reg32 = MCHBAR32(WCC); |
| 2334 | reg32 &= 0x113ff3ff; |
| 2335 | reg32 |= (4 << 29) | (3 << 25) | (1 << 10); |
| 2336 | MCHBAR32(WCC) = reg32; |
| 2337 | |
| 2338 | MCHBAR32(SMVREFC) |= (1 << 6); |
| 2339 | |
| 2340 | MCHBAR32(MMARB0) &= ~(3 << 17); |
| 2341 | MCHBAR32(MMARB0) |= (1 << 21) | (1 << 16); |
| 2342 | |
| 2343 | MCHBAR32(MMARB1) &= ~(7 << 8); |
| 2344 | MCHBAR32(MMARB1) |= (3 << 8); |
| 2345 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2346 | /* Adaptive Idle Timer Control */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2347 | MCHBAR32(C0AIT) = 0x000006c4; |
| 2348 | MCHBAR32(C0AIT+4) = 0x871a066d; |
| 2349 | |
| 2350 | MCHBAR32(C1AIT) = 0x000006c4; |
| 2351 | MCHBAR32(C1AIT+4) = 0x871a066d; |
| 2352 | } |
| 2353 | |
| 2354 | #define EA_DUALCHANNEL_XOR_BANK_RANK_MODE (0xd4 << 24) |
| 2355 | #define EA_DUALCHANNEL_XOR_BANK_MODE (0xf4 << 24) |
| 2356 | #define EA_DUALCHANNEL_BANK_RANK_MODE (0xc2 << 24) |
| 2357 | #define EA_DUALCHANNEL_BANK_MODE (0xe2 << 24) |
| 2358 | #define EA_SINGLECHANNEL_XOR_BANK_RANK_MODE (0x91 << 24) |
| 2359 | #define EA_SINGLECHANNEL_XOR_BANK_MODE (0xb1 << 24) |
| 2360 | #define EA_SINGLECHANNEL_BANK_RANK_MODE (0x80 << 24) |
| 2361 | #define EA_SINGLECHANNEL_BANK_MODE (0xa0 << 24) |
| 2362 | |
| 2363 | static void sdram_enhanced_addressing_mode(struct sys_info *sysinfo) |
| 2364 | { |
| 2365 | u32 chan0 = 0, chan1 = 0; |
| 2366 | int chan0_dualsided, chan1_dualsided, chan0_populated, chan1_populated; |
| 2367 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2368 | chan0_populated = (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2369 | sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2370 | chan1_populated = (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2371 | sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED); |
| 2372 | chan0_dualsided = (sysinfo->banksize[1] || sysinfo->banksize[3]); |
| 2373 | chan1_dualsided = (sysinfo->banksize[5] || sysinfo->banksize[7]); |
| 2374 | |
| 2375 | if (sdram_capabilities_enhanced_addressing_xor()) { |
| 2376 | if (!sysinfo->interleaved) { |
| 2377 | /* Single Channel & Dual Channel Assymetric */ |
| 2378 | if (chan0_populated) { |
| 2379 | if (chan0_dualsided) { |
| 2380 | chan0 = EA_SINGLECHANNEL_XOR_BANK_RANK_MODE; |
| 2381 | } else { |
| 2382 | chan0 = EA_SINGLECHANNEL_XOR_BANK_MODE; |
| 2383 | } |
| 2384 | } |
| 2385 | if (chan1_populated) { |
| 2386 | if (chan1_dualsided) { |
| 2387 | chan1 = EA_SINGLECHANNEL_XOR_BANK_RANK_MODE; |
| 2388 | } else { |
| 2389 | chan1 = EA_SINGLECHANNEL_XOR_BANK_MODE; |
| 2390 | } |
| 2391 | } |
| 2392 | } else { |
| 2393 | /* Interleaved has always both channels populated */ |
| 2394 | if (chan0_dualsided) { |
| 2395 | chan0 = EA_DUALCHANNEL_XOR_BANK_RANK_MODE; |
| 2396 | } else { |
| 2397 | chan0 = EA_DUALCHANNEL_XOR_BANK_MODE; |
| 2398 | } |
| 2399 | |
| 2400 | if (chan1_dualsided) { |
| 2401 | chan1 = EA_DUALCHANNEL_XOR_BANK_RANK_MODE; |
| 2402 | } else { |
| 2403 | chan1 = EA_DUALCHANNEL_XOR_BANK_MODE; |
| 2404 | } |
| 2405 | } |
| 2406 | } else { |
| 2407 | if (!sysinfo->interleaved) { |
| 2408 | /* Single Channel & Dual Channel Assymetric */ |
| 2409 | if (chan0_populated) { |
| 2410 | if (chan0_dualsided) { |
| 2411 | chan0 = EA_SINGLECHANNEL_BANK_RANK_MODE; |
| 2412 | } else { |
| 2413 | chan0 = EA_SINGLECHANNEL_BANK_MODE; |
| 2414 | } |
| 2415 | } |
| 2416 | if (chan1_populated) { |
| 2417 | if (chan1_dualsided) { |
| 2418 | chan1 = EA_SINGLECHANNEL_BANK_RANK_MODE; |
| 2419 | } else { |
| 2420 | chan1 = EA_SINGLECHANNEL_BANK_MODE; |
| 2421 | } |
| 2422 | } |
| 2423 | } else { |
| 2424 | /* Interleaved has always both channels populated */ |
| 2425 | if (chan0_dualsided) { |
| 2426 | chan0 = EA_DUALCHANNEL_BANK_RANK_MODE; |
| 2427 | } else { |
| 2428 | chan0 = EA_DUALCHANNEL_BANK_MODE; |
| 2429 | } |
| 2430 | |
| 2431 | if (chan1_dualsided) { |
| 2432 | chan1 = EA_DUALCHANNEL_BANK_RANK_MODE; |
| 2433 | } else { |
| 2434 | chan1 = EA_DUALCHANNEL_BANK_MODE; |
| 2435 | } |
| 2436 | } |
| 2437 | } |
| 2438 | |
| 2439 | MCHBAR32(C0DRC1) &= 0x00ffffff; |
| 2440 | MCHBAR32(C0DRC1) |= chan0; |
| 2441 | MCHBAR32(C1DRC1) &= 0x00ffffff; |
| 2442 | MCHBAR32(C1DRC1) |= chan1; |
| 2443 | } |
| 2444 | |
| 2445 | static void sdram_post_jedec_initialization(struct sys_info *sysinfo) |
| 2446 | { |
| 2447 | u32 reg32; |
| 2448 | |
| 2449 | /* Enable Channel XORing for Dual Channel Interleave */ |
| 2450 | if (sysinfo->interleaved) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2451 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2452 | reg32 = MCHBAR32(DCC); |
Patrick Georgi | 77d6683 | 2010-10-01 08:02:45 +0000 | [diff] [blame] | 2453 | #if CONFIG_CHANNEL_XOR_RANDOMIZATION |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2454 | reg32 &= ~(1 << 10); |
Stefan Reinauer | 30140a5 | 2009-03-11 16:20:39 +0000 | [diff] [blame] | 2455 | reg32 |= (1 << 9); |
| 2456 | #else |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2457 | reg32 &= ~(1 << 9); |
Stefan Reinauer | 30140a5 | 2009-03-11 16:20:39 +0000 | [diff] [blame] | 2458 | #endif |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2459 | MCHBAR32(DCC) = reg32; |
| 2460 | } |
| 2461 | |
| 2462 | /* DRAM mode optimizations */ |
| 2463 | sdram_enhanced_addressing_mode(sysinfo); |
| 2464 | |
| 2465 | reg32 = MCHBAR32(FSBPMC3); |
| 2466 | reg32 &= ~(1 << 1); |
| 2467 | MCHBAR32(FSBPMC3) = reg32; |
| 2468 | |
| 2469 | reg32 = MCHBAR32(SBTEST); |
| 2470 | reg32 &= ~(1 << 2); |
| 2471 | MCHBAR32(SBTEST) = reg32; |
| 2472 | |
| 2473 | reg32 = MCHBAR32(SBOCC); |
| 2474 | reg32 &= 0xffbdb6ff; |
| 2475 | reg32 |= (0xbdb6 << 8) | (1 << 0); |
| 2476 | MCHBAR32(SBOCC) = reg32; |
| 2477 | } |
| 2478 | |
| 2479 | static void sdram_power_management(struct sys_info *sysinfo) |
| 2480 | { |
| 2481 | u8 reg8; |
| 2482 | u16 reg16; |
| 2483 | u32 reg32; |
| 2484 | int integrated_graphics = 1; |
| 2485 | int i; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2486 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2487 | reg32 = MCHBAR32(C0DRT2); |
| 2488 | reg32 &= 0xffffff00; |
| 2489 | /* Idle timer = 8 clocks, CKE idle timer = 16 clocks */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2490 | reg32 |= (1 << 5) | (1 << 4); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2491 | MCHBAR32(C0DRT2) = reg32; |
| 2492 | |
| 2493 | reg32 = MCHBAR32(C1DRT2); |
| 2494 | reg32 &= 0xffffff00; |
| 2495 | /* Idle timer = 8 clocks, CKE idle timer = 16 clocks */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2496 | reg32 |= (1 << 5) | (1 << 4); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2497 | MCHBAR32(C1DRT2) = reg32; |
| 2498 | |
| 2499 | reg32 = MCHBAR32(C0DRC1); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2500 | |
| 2501 | reg32 |= (1 << 12) | (1 << 11); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2502 | MCHBAR32(C0DRC1) = reg32; |
| 2503 | |
| 2504 | reg32 = MCHBAR32(C1DRC1); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2505 | |
| 2506 | reg32 |= (1 << 12) | (1 << 11); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2507 | MCHBAR32(C1DRC1) = reg32; |
| 2508 | |
| 2509 | if (i945_silicon_revision()>1) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2510 | /* FIXME bits 5 and 0 only if PCIe graphics is disabled */ |
| 2511 | u16 peg_bits = (1 << 5) | (1 << 0); |
| 2512 | |
| 2513 | MCHBAR16(UPMC1) = 0x1010 | peg_bits; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2514 | } else { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2515 | /* FIXME bits 5 and 0 only if PCIe graphics is disabled */ |
| 2516 | u16 peg_bits = (1 << 5) | (1 << 0); |
| 2517 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2518 | /* Rev 0 and 1 */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2519 | MCHBAR16(UPMC1) = 0x0010 | peg_bits; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2520 | } |
| 2521 | |
| 2522 | reg16 = MCHBAR16(UPMC2); |
| 2523 | reg16 &= 0xfc00; |
| 2524 | reg16 |= 0x0100; |
| 2525 | MCHBAR16(UPMC2) = reg16; |
| 2526 | |
| 2527 | MCHBAR32(UPMC3) = 0x000f06ff; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2528 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2529 | for (i=0; i<5; i++) { |
| 2530 | MCHBAR32(UPMC3) &= ~(1 << 16); |
| 2531 | MCHBAR32(UPMC3) |= (1 << 16); |
| 2532 | } |
| 2533 | |
| 2534 | MCHBAR32(GIPMC1) = 0x8000000c; |
| 2535 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2536 | reg16 = MCHBAR16(CPCTL); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2537 | reg16 &= ~(7 << 11); |
| 2538 | if (i945_silicon_revision()>2) { |
| 2539 | reg16 |= (6 << 11); |
| 2540 | } else { |
| 2541 | reg16 |= (4 << 11); |
| 2542 | } |
| 2543 | MCHBAR16(CPCTL) = reg16; |
| 2544 | |
Stefan Reinauer | 30140a5 | 2009-03-11 16:20:39 +0000 | [diff] [blame] | 2545 | #if 0 |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2546 | if ((MCHBAR32(ECO) & (1 << 16)) != 0) { |
Stefan Reinauer | 30140a5 | 2009-03-11 16:20:39 +0000 | [diff] [blame] | 2547 | #else |
| 2548 | if (i945_silicon_revision() != 0) { |
| 2549 | #endif |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2550 | switch (sysinfo->fsb_frequency) { |
| 2551 | case 667: MCHBAR32(HGIPMC2) = 0x0d590d59; break; |
| 2552 | case 533: MCHBAR32(HGIPMC2) = 0x155b155b; break; |
| 2553 | } |
| 2554 | } else { |
| 2555 | switch (sysinfo->fsb_frequency) { |
| 2556 | case 667: MCHBAR32(HGIPMC2) = 0x09c409c4; break; |
| 2557 | case 533: MCHBAR32(HGIPMC2) = 0x0fa00fa0; break; |
| 2558 | } |
| 2559 | } |
| 2560 | |
| 2561 | MCHBAR32(FSBPMC1) = 0x8000000c; |
| 2562 | |
| 2563 | reg32 = MCHBAR32(C2C3TT); |
| 2564 | reg32 &= 0xffff0000; |
| 2565 | switch (sysinfo->fsb_frequency) { |
| 2566 | case 667: reg32 |= 0x0600; break; |
| 2567 | case 533: reg32 |= 0x0480; break; |
| 2568 | } |
| 2569 | MCHBAR32(C2C3TT) = reg32; |
| 2570 | |
| 2571 | reg32 = MCHBAR32(C3C4TT); |
| 2572 | reg32 &= 0xffff0000; |
| 2573 | switch (sysinfo->fsb_frequency) { |
| 2574 | case 667: reg32 |= 0x0b80; break; |
| 2575 | case 533: reg32 |= 0x0980; break; |
| 2576 | } |
| 2577 | MCHBAR32(C3C4TT) = reg32; |
| 2578 | |
| 2579 | if (i945_silicon_revision() == 0) { |
| 2580 | MCHBAR32(ECO) &= ~(1 << 16); |
| 2581 | } else { |
| 2582 | MCHBAR32(ECO) |= (1 << 16); |
| 2583 | } |
| 2584 | |
| 2585 | #if 0 |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2586 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2587 | if (i945_silicon_revision() == 0) { |
| 2588 | MCHBAR32(FSBPMC3) &= ~(1 << 29); |
| 2589 | } else { |
| 2590 | MCHBAR32(FSBPMC3) |= (1 << 29); |
| 2591 | } |
| 2592 | #endif |
| 2593 | MCHBAR32(FSBPMC3) &= ~(1 << 29); |
| 2594 | |
| 2595 | MCHBAR32(FSBPMC3) |= (1 << 21); |
| 2596 | |
| 2597 | MCHBAR32(FSBPMC3) &= ~(1 << 19); |
| 2598 | |
| 2599 | MCHBAR32(FSBPMC3) &= ~(1 << 13); |
| 2600 | |
| 2601 | reg32 = MCHBAR32(FSBPMC4); |
| 2602 | reg32 &= ~(3 << 24); |
| 2603 | reg32 |= ( 2 << 24); |
| 2604 | MCHBAR32(FSBPMC4) = reg32; |
| 2605 | |
| 2606 | MCHBAR32(FSBPMC4) |= (1 << 21); |
| 2607 | |
| 2608 | MCHBAR32(FSBPMC4) |= (1 << 5); |
| 2609 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2610 | if ((i945_silicon_revision() < 2) /* || cpuid() = 0x6e8 */ ) { |
| 2611 | /* stepping 0 and 1 or CPUID 6e8 */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2612 | MCHBAR32(FSBPMC4) &= ~(1 << 4); |
| 2613 | } else { |
Stefan Reinauer | 30140a5 | 2009-03-11 16:20:39 +0000 | [diff] [blame] | 2614 | MCHBAR32(FSBPMC4) |= (1 << 4); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2615 | } |
| 2616 | |
| 2617 | reg8 = pci_read_config8(PCI_DEV(0,0x0,0), 0xfc); |
| 2618 | reg8 |= (1 << 4); |
| 2619 | pci_write_config8(PCI_DEV(0, 0x0, 0), 0xfc, reg8); |
| 2620 | |
| 2621 | reg8 = pci_read_config8(PCI_DEV(0,0x2,0), 0xc1); |
| 2622 | reg8 |= (1 << 2); |
| 2623 | pci_write_config8(PCI_DEV(0, 0x2, 0), 0xc1, reg8); |
| 2624 | |
Stefan Reinauer | de3206a | 2010-02-22 06:09:43 +0000 | [diff] [blame] | 2625 | #ifdef C2_SELF_REFRESH_DISABLE |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2626 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2627 | if (integrated_graphics) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2628 | printk(BIOS_DEBUG, "C2 self-refresh with IGD\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2629 | MCHBAR16(MIPMC4) = 0x0468; |
| 2630 | MCHBAR16(MIPMC5) = 0x046c; |
| 2631 | MCHBAR16(MIPMC6) = 0x046c; |
| 2632 | } else { |
| 2633 | MCHBAR16(MIPMC4) = 0x6468; |
| 2634 | MCHBAR16(MIPMC5) = 0x646c; |
| 2635 | MCHBAR16(MIPMC6) = 0x646c; |
| 2636 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2637 | #else |
| 2638 | if (integrated_graphics) { |
| 2639 | MCHBAR16(MIPMC4) = 0x04f8; |
| 2640 | MCHBAR16(MIPMC5) = 0x04fc; |
| 2641 | MCHBAR16(MIPMC6) = 0x04fc; |
| 2642 | } else { |
| 2643 | MCHBAR16(MIPMC4) = 0x64f8; |
| 2644 | MCHBAR16(MIPMC5) = 0x64fc; |
| 2645 | MCHBAR16(MIPMC6) = 0x64fc; |
| 2646 | } |
| 2647 | |
| 2648 | #endif |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2649 | |
| 2650 | reg32 = MCHBAR32(PMCFG); |
| 2651 | reg32 &= ~(3 << 17); |
| 2652 | reg32 |= (2 << 17); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2653 | MCHBAR32(PMCFG) = reg32; |
| 2654 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2655 | MCHBAR32(PMCFG) |= (1 << 4); |
| 2656 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2657 | reg32 = MCHBAR32(0xc30); |
| 2658 | reg32 &= 0xffffff00; |
| 2659 | reg32 |= 0x01; |
| 2660 | MCHBAR32(0xc30) = reg32; |
| 2661 | |
| 2662 | MCHBAR32(0xb18) &= ~(1 << 21); |
| 2663 | } |
| 2664 | |
| 2665 | static void sdram_thermal_management(void) |
| 2666 | { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2667 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2668 | MCHBAR8(TCO1) = 0x00; |
| 2669 | MCHBAR8(TCO0) = 0x00; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2670 | |
| 2671 | /* The Thermal Sensors for DIMMs at 0x50, 0x52 are at I2C addr |
| 2672 | * 0x30/0x32. |
| 2673 | */ |
| 2674 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 2675 | /* TODO This is not implemented yet. Volunteers? */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2676 | } |
| 2677 | |
| 2678 | static void sdram_save_receive_enable(void) |
| 2679 | { |
| 2680 | int i; |
| 2681 | u32 reg32; |
| 2682 | u8 values[4]; |
| 2683 | |
| 2684 | /* The following values are stored to an unused CMOS |
| 2685 | * area and restored instead of recalculated in case |
| 2686 | * of an S3 resume. |
| 2687 | * |
| 2688 | * C0WL0REOST [7:0] -> 8 bit |
| 2689 | * C1WL0REOST [7:0] -> 8 bit |
| 2690 | * RCVENMT [11:8] [3:0] -> 8 bit |
| 2691 | * C0DRT1 [27:24] -> 4 bit |
| 2692 | * C1DRT1 [27:24] -> 4 bit |
| 2693 | */ |
| 2694 | |
| 2695 | values[0] = MCHBAR8(C0WL0REOST); |
| 2696 | values[1] = MCHBAR8(C1WL0REOST); |
| 2697 | |
| 2698 | reg32 = MCHBAR32(RCVENMT); |
| 2699 | values[2] = (u8)((reg32 >> (8 - 4)) & 0xf0) | (reg32 & 0x0f); |
| 2700 | |
| 2701 | reg32 = MCHBAR32(C0DRT1); |
| 2702 | values[3] = (reg32 >> 24) & 0x0f; |
| 2703 | reg32 = MCHBAR32(C1DRT1); |
| 2704 | values[3] |= (reg32 >> (24 - 4)) & 0xf0; |
| 2705 | |
| 2706 | /* coreboot only uses bytes 0 - 127 for its CMOS values so far |
Edwin Beasant | eb50c7d | 2010-07-06 21:05:04 +0000 | [diff] [blame] | 2707 | * so we grab bytes 128 - 131 to save the receive enable values |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2708 | */ |
| 2709 | |
| 2710 | for (i=0; i<4; i++) |
| 2711 | cmos_write(values[i], 128 + i); |
| 2712 | } |
| 2713 | |
| 2714 | static void sdram_recover_receive_enable(void) |
| 2715 | { |
| 2716 | int i; |
| 2717 | u32 reg32; |
| 2718 | u8 values[4]; |
| 2719 | |
| 2720 | for (i=0; i<4; i++) |
| 2721 | values[i] = cmos_read(128 + i); |
| 2722 | |
| 2723 | MCHBAR8(C0WL0REOST) = values[0]; |
| 2724 | MCHBAR8(C1WL0REOST) = values[1]; |
| 2725 | |
| 2726 | reg32 = MCHBAR32(RCVENMT); |
| 2727 | reg32 &= ~((0x0f << 8) | (0x0f << 0)); |
| 2728 | reg32 |= ((u32)(values[2] & 0xf0) << (8 - 4)) | (values[2] & 0x0f); |
| 2729 | MCHBAR32(RCVENMT) = reg32; |
| 2730 | |
| 2731 | reg32 = MCHBAR32(C0DRT1) & ~(0x0f << 24); |
| 2732 | reg32 |= (u32)(values[3] & 0x0f) << 24; |
| 2733 | MCHBAR32(C0DRT1) = reg32; |
| 2734 | |
| 2735 | reg32 = MCHBAR32(C1DRT1) & ~(0x0f << 24); |
| 2736 | reg32 |= (u32)(values[3] & 0xf0) << (24 - 4); |
| 2737 | MCHBAR32(C1DRT1) = reg32; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2738 | } |
| 2739 | |
| 2740 | #include "rcven.c" |
| 2741 | |
| 2742 | static void sdram_program_receive_enable(struct sys_info *sysinfo) |
| 2743 | { |
| 2744 | MCHBAR32(REPC) |= (1 << 0); |
| 2745 | |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 2746 | /* enable upper CMOS */ |
| 2747 | RCBA32(0x3400) = (1 << 2); |
| 2748 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2749 | /* Program Receive Enable Timings */ |
| 2750 | if (sysinfo->boot_path == BOOT_PATH_RESUME) { |
| 2751 | sdram_recover_receive_enable(); |
| 2752 | } else { |
| 2753 | receive_enable_adjust(sysinfo); |
| 2754 | sdram_save_receive_enable(); |
| 2755 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2756 | |
| 2757 | MCHBAR32(C0DRC1) |= (1 << 6); |
| 2758 | MCHBAR32(C1DRC1) |= (1 << 6); |
| 2759 | MCHBAR32(C0DRC1) &= ~(1 << 6); |
| 2760 | MCHBAR32(C1DRC1) &= ~(1 << 6); |
| 2761 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2762 | MCHBAR32(MIPMC3) |= (0x0f << 0); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2763 | } |
| 2764 | |
| 2765 | /** |
| 2766 | * @brief Enable On-Die Termination for DDR2. |
| 2767 | * |
| 2768 | */ |
| 2769 | |
| 2770 | static void sdram_on_die_termination(struct sys_info *sysinfo) |
| 2771 | { |
| 2772 | static const u32 odt[] = { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2773 | 0x00024911, 0xe0010000, |
| 2774 | 0x00049211, 0xe0020000, |
| 2775 | 0x0006db11, 0xe0030000, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2776 | }; |
| 2777 | |
| 2778 | u32 reg32; |
| 2779 | int cas; |
| 2780 | |
| 2781 | reg32 = MCHBAR32(ODTC); |
| 2782 | reg32 &= ~(3 << 16); |
| 2783 | reg32 |= (1 << 14) | (1 << 6) | (2 << 16); |
| 2784 | MCHBAR32(ODTC) = reg32; |
| 2785 | |
| 2786 | if ( !(sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED && |
| 2787 | sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) ) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2788 | printk(BIOS_DEBUG, "one dimm per channel config.. \n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2789 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2790 | reg32 = MCHBAR32(C0ODT); |
| 2791 | reg32 &= ~(7 << 28); |
| 2792 | MCHBAR32(C0ODT) = reg32; |
| 2793 | reg32 = MCHBAR32(C1ODT); |
| 2794 | reg32 &= ~(7 << 28); |
| 2795 | MCHBAR32(C1ODT) = reg32; |
| 2796 | } |
| 2797 | |
| 2798 | cas = sysinfo->cas; |
| 2799 | |
| 2800 | reg32 = MCHBAR32(C0ODT) & 0xfff00000; |
| 2801 | reg32 |= odt[(cas-3) * 2]; |
| 2802 | MCHBAR32(C0ODT) = reg32; |
| 2803 | |
| 2804 | reg32 = MCHBAR32(C1ODT) & 0xfff00000; |
| 2805 | reg32 |= odt[(cas-3) * 2]; |
| 2806 | MCHBAR32(C1ODT) = reg32; |
| 2807 | |
| 2808 | reg32 = MCHBAR32(C0ODT + 4) & 0x1fc8ffff; |
| 2809 | reg32 |= odt[((cas-3) * 2) + 1]; |
| 2810 | MCHBAR32(C0ODT + 4) = reg32; |
| 2811 | |
| 2812 | reg32 = MCHBAR32(C1ODT + 4) & 0x1fc8ffff; |
| 2813 | reg32 |= odt[((cas-3) * 2) + 1]; |
| 2814 | MCHBAR32(C1ODT + 4) = reg32; |
| 2815 | } |
| 2816 | |
| 2817 | /** |
| 2818 | * @brief Enable clocks to populated sockets |
| 2819 | */ |
| 2820 | |
| 2821 | static void sdram_enable_memory_clocks(struct sys_info *sysinfo) |
| 2822 | { |
| 2823 | u8 clocks[2] = { 0, 0 }; |
| 2824 | |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 2825 | #if defined(CONFIG_NORTHBRIDGE_INTEL_I945GM) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2826 | #define CLOCKS_WIDTH 2 |
Peter Stuge | e4bc0f6 | 2010-10-01 09:13:18 +0000 | [diff] [blame] | 2827 | #elif defined(CONFIG_NORTHBRIDGE_INTEL_I945GC) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2828 | #define CLOCKS_WIDTH 3 |
| 2829 | #endif |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2830 | if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2831 | clocks[0] |= (1 << CLOCKS_WIDTH)-1; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2832 | |
| 2833 | if (sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2834 | clocks[0] |= ((1 << CLOCKS_WIDTH)-1) << CLOCKS_WIDTH; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2835 | |
| 2836 | if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2837 | clocks[1] |= (1 << CLOCKS_WIDTH)-1; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2838 | |
| 2839 | if (sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) |
Stefan Reinauer | 24b4df5 | 2010-01-17 13:47:35 +0000 | [diff] [blame] | 2840 | clocks[1] |= ((1 << CLOCKS_WIDTH)-1) << CLOCKS_WIDTH; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2841 | |
Patrick Georgi | 77d6683 | 2010-10-01 08:02:45 +0000 | [diff] [blame] | 2842 | #if CONFIG_OVERRIDE_CLOCK_DISABLE |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2843 | /* Usually system firmware turns off system memory clock signals |
| 2844 | * to unused SO-DIMM slots to reduce EMI and power consumption. |
| 2845 | * However, the Kontron 986LCD-M does not like unused clock |
| 2846 | * signals to be disabled. |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2847 | */ |
| 2848 | |
| 2849 | clocks[0] = 0xf; /* force all clock gate pairs to enable */ |
| 2850 | clocks[1] = 0xf; /* force all clock gate pairs to enable */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2851 | #endif |
| 2852 | |
| 2853 | MCHBAR8(C0DCLKDIS) = clocks[0]; |
| 2854 | MCHBAR8(C1DCLKDIS) = clocks[1]; |
| 2855 | } |
| 2856 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2857 | #define RTT_ODT_NONE 0 |
| 2858 | #define RTT_ODT_50_OHM ( (1 << 9) | (1 << 5) ) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2859 | #define RTT_ODT_75_OHM (1 << 5) |
| 2860 | #define RTT_ODT_150_OHM (1 << 9) |
| 2861 | |
| 2862 | #define EMRS_OCD_DEFAULT ( (1 << 12) | (1 << 11) | (1 << 10) ) |
| 2863 | |
| 2864 | #define MRS_CAS_3 (3 << 7) |
| 2865 | #define MRS_CAS_4 (4 << 7) |
| 2866 | #define MRS_CAS_5 (5 << 7) |
| 2867 | |
| 2868 | #define MRS_TWR_3 (2 << 12) |
| 2869 | #define MRS_TWR_4 (3 << 12) |
| 2870 | #define MRS_TWR_5 (4 << 12) |
| 2871 | |
| 2872 | #define MRS_BT (1 << 6) |
| 2873 | |
| 2874 | #define MRS_BL4 (2 << 3) |
| 2875 | #define MRS_BL8 (3 << 3) |
| 2876 | |
| 2877 | static void sdram_jedec_enable(struct sys_info *sysinfo) |
| 2878 | { |
| 2879 | int i, nonzero; |
| 2880 | u32 bankaddr = 0, tmpaddr, mrsaddr = 0; |
| 2881 | |
| 2882 | for (i = 0, nonzero = -1; i < 8; i++) { |
| 2883 | if (sysinfo->banksize[i] == 0) { |
| 2884 | continue; |
| 2885 | } |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2886 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2887 | printk(BIOS_DEBUG, "jedec enable sequence: bank %d\n", i); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2888 | switch (i) { |
| 2889 | case 0: |
| 2890 | /* Start at address 0 */ |
| 2891 | bankaddr = 0; |
| 2892 | break; |
| 2893 | case 4: |
| 2894 | if (sysinfo->interleaved) { |
| 2895 | bankaddr = 0x40; |
| 2896 | break; |
| 2897 | } |
| 2898 | default: |
| 2899 | if (nonzero != -1) { |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 2900 | printk(BIOS_DEBUG, "bankaddr from bank size of rank %d\n", nonzero); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2901 | bankaddr += sysinfo->banksize[nonzero] << |
| 2902 | (sysinfo->interleaved ? 26 : 25); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2903 | break; |
| 2904 | } |
| 2905 | /* No populated bank hit before. Start at address 0 */ |
| 2906 | bankaddr = 0; |
| 2907 | } |
| 2908 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2909 | /* We have a bank with a non-zero size.. Remember it |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2910 | * for the next offset we have to calculate |
| 2911 | */ |
| 2912 | nonzero = i; |
| 2913 | |
| 2914 | /* Get CAS latency set up */ |
| 2915 | switch (sysinfo->cas) { |
| 2916 | case 5: mrsaddr = MRS_CAS_5; break; |
| 2917 | case 4: mrsaddr = MRS_CAS_4; break; |
| 2918 | case 3: mrsaddr = MRS_CAS_3; break; |
| 2919 | default: die("Jedec Error (CAS).\n"); |
| 2920 | } |
| 2921 | |
| 2922 | /* Get tWR set */ |
| 2923 | switch (sysinfo->twr) { |
| 2924 | case 5: mrsaddr |= MRS_TWR_5; break; |
| 2925 | case 4: mrsaddr |= MRS_TWR_4; break; |
| 2926 | case 3: mrsaddr |= MRS_TWR_3; break; |
| 2927 | default: die("Jedec Error (tWR).\n"); |
| 2928 | } |
| 2929 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2930 | /* Set "Burst Type" */ |
| 2931 | mrsaddr |= MRS_BT; |
| 2932 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2933 | /* Interleaved */ |
| 2934 | if (sysinfo->interleaved) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2935 | mrsaddr = mrsaddr << 1; |
| 2936 | } |
| 2937 | |
| 2938 | /* Only burst length 8 supported */ |
| 2939 | mrsaddr |= MRS_BL8; |
| 2940 | |
| 2941 | /* Apply NOP */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2942 | PRINTK_DEBUG("Apply NOP\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2943 | do_ram_command(RAM_COMMAND_NOP); |
| 2944 | ram_read32(bankaddr); |
| 2945 | |
| 2946 | /* Precharge all banks */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2947 | PRINTK_DEBUG("All Banks Precharge\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2948 | do_ram_command(RAM_COMMAND_PRECHARGE); |
| 2949 | ram_read32(bankaddr); |
| 2950 | |
| 2951 | /* Extended Mode Register Set (2) */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2952 | PRINTK_DEBUG("Extended Mode Register Set(2)\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2953 | do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_2); |
| 2954 | ram_read32(bankaddr); |
| 2955 | |
| 2956 | /* Extended Mode Register Set (3) */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2957 | PRINTK_DEBUG("Extended Mode Register Set(3)\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2958 | do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_3); |
| 2959 | ram_read32(bankaddr); |
| 2960 | |
| 2961 | /* Extended Mode Register Set */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2962 | PRINTK_DEBUG("Extended Mode Register Set\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2963 | do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_1); |
| 2964 | tmpaddr = bankaddr; |
| 2965 | if (!sdram_capabilities_dual_channel()) { |
| 2966 | tmpaddr |= RTT_ODT_75_OHM; |
| 2967 | } else if (sysinfo->interleaved) { |
| 2968 | tmpaddr |= (RTT_ODT_150_OHM << 1); |
| 2969 | } else { |
| 2970 | tmpaddr |= RTT_ODT_150_OHM; |
| 2971 | } |
| 2972 | ram_read32(tmpaddr); |
| 2973 | |
| 2974 | /* Mode Register Set: Reset DLLs */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2975 | PRINTK_DEBUG("MRS: Reset DLLs\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2976 | do_ram_command(RAM_COMMAND_MRS); |
| 2977 | tmpaddr = bankaddr; |
| 2978 | tmpaddr |= mrsaddr; |
| 2979 | /* Set DLL reset bit */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 2980 | if (sysinfo->interleaved) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2981 | tmpaddr |= (1 << 12); |
| 2982 | else |
| 2983 | tmpaddr |= (1 << 11); |
| 2984 | ram_read32(tmpaddr); |
| 2985 | |
| 2986 | /* Precharge all banks */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2987 | PRINTK_DEBUG("All Banks Precharge\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2988 | do_ram_command(RAM_COMMAND_PRECHARGE); |
| 2989 | ram_read32(bankaddr); |
| 2990 | |
| 2991 | /* CAS before RAS Refresh */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 2992 | PRINTK_DEBUG("CAS before RAS\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2993 | do_ram_command(RAM_COMMAND_CBR); |
| 2994 | |
| 2995 | /* CBR wants two READs */ |
| 2996 | ram_read32(bankaddr); |
| 2997 | ram_read32(bankaddr); |
| 2998 | |
| 2999 | /* Mode Register Set: Enable DLLs */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 3000 | PRINTK_DEBUG("MRS: Enable DLLs\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3001 | do_ram_command(RAM_COMMAND_MRS); |
| 3002 | |
| 3003 | tmpaddr = bankaddr; |
| 3004 | tmpaddr |= mrsaddr; |
| 3005 | ram_read32(tmpaddr); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3006 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3007 | /* Extended Mode Register Set */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 3008 | PRINTK_DEBUG("Extended Mode Register Set: ODT/OCD\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3009 | do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_1); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3010 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3011 | tmpaddr = bankaddr; |
| 3012 | if (!sdram_capabilities_dual_channel()) { |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3013 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3014 | tmpaddr |= RTT_ODT_75_OHM | EMRS_OCD_DEFAULT; |
| 3015 | } else if (sysinfo->interleaved) { |
| 3016 | tmpaddr |= ((RTT_ODT_150_OHM | EMRS_OCD_DEFAULT) << 1); |
| 3017 | } else { |
| 3018 | tmpaddr |= RTT_ODT_150_OHM | EMRS_OCD_DEFAULT; |
| 3019 | } |
| 3020 | ram_read32(tmpaddr); |
| 3021 | |
| 3022 | /* Extended Mode Register Set */ |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 3023 | PRINTK_DEBUG("Extended Mode Register Set: OCD Exit\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3024 | do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_1); |
| 3025 | |
| 3026 | tmpaddr = bankaddr; |
| 3027 | if (!sdram_capabilities_dual_channel()) { |
| 3028 | tmpaddr |= RTT_ODT_75_OHM; |
| 3029 | } else if (sysinfo->interleaved) { |
| 3030 | tmpaddr |= (RTT_ODT_150_OHM << 1); |
| 3031 | } else { |
| 3032 | tmpaddr |= RTT_ODT_150_OHM; |
| 3033 | } |
| 3034 | ram_read32(tmpaddr); |
| 3035 | } |
| 3036 | } |
| 3037 | |
| 3038 | static void sdram_init_complete(void) |
| 3039 | { |
Stefan Reinauer | 779b3e3 | 2008-11-10 15:43:37 +0000 | [diff] [blame] | 3040 | PRINTK_DEBUG("Normal Operation\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3041 | do_ram_command(RAM_COMMAND_NORMAL); |
| 3042 | } |
| 3043 | |
| 3044 | static void sdram_setup_processor_side(void) |
| 3045 | { |
| 3046 | if (i945_silicon_revision() == 0) |
| 3047 | MCHBAR32(FSBPMC3) |= (1 << 2); |
| 3048 | |
| 3049 | MCHBAR8(0xb00) |= 1; |
| 3050 | |
| 3051 | if (i945_silicon_revision() == 0) |
| 3052 | MCHBAR32(SLPCTL) |= (1 << 8); |
| 3053 | } |
| 3054 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3055 | /** |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3056 | * @param boot_path: 0 = normal, 1 = reset, 2 = resume from s3 |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3057 | */ |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 3058 | void sdram_initialize(int boot_path, const u8 *spd_addresses) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3059 | { |
| 3060 | struct sys_info sysinfo; |
| 3061 | u8 reg8, cas_mask; |
| 3062 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 3063 | printk(BIOS_DEBUG, "Setting up RAM controller.\n"); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3064 | |
| 3065 | memset(&sysinfo, 0, sizeof(sysinfo)); |
| 3066 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3067 | sysinfo.boot_path = boot_path; |
Sven Schnelle | 541269b | 2011-02-21 09:39:17 +0000 | [diff] [blame] | 3068 | sysinfo.spd_addresses = spd_addresses; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3069 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3070 | /* Look at the type of DIMMs and verify all DIMMs are x8 or x16 width */ |
| 3071 | sdram_get_dram_configuration(&sysinfo); |
| 3072 | |
Stefan Reinauer | bf264e9 | 2010-05-14 19:09:20 +0000 | [diff] [blame] | 3073 | /* If error, do cold boot */ |
| 3074 | sdram_detect_errors(&sysinfo); |
| 3075 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3076 | /* Check whether we have stacked DIMMs */ |
| 3077 | sdram_verify_package_type(&sysinfo); |
| 3078 | |
| 3079 | /* Determine common CAS */ |
| 3080 | cas_mask = sdram_possible_cas_latencies(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3081 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3082 | /* Choose Common Frequency */ |
| 3083 | sdram_detect_cas_latency_and_ram_speed(&sysinfo, cas_mask); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3084 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3085 | /* Determine smallest common tRAS */ |
| 3086 | sdram_detect_smallest_tRAS(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3087 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3088 | /* Determine tRP */ |
| 3089 | sdram_detect_smallest_tRP(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3090 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3091 | /* Determine tRCD */ |
| 3092 | sdram_detect_smallest_tRCD(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3093 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3094 | /* Determine smallest refresh period */ |
| 3095 | sdram_detect_smallest_refresh(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3096 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3097 | /* Verify all DIMMs support burst length 8 */ |
| 3098 | sdram_verify_burst_length(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3099 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3100 | /* determine tWR */ |
| 3101 | sdram_detect_smallest_tWR(&sysinfo); |
| 3102 | |
| 3103 | /* Determine DIMM size parameters (rows, columns banks) */ |
| 3104 | sdram_detect_dimm_size(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3105 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3106 | /* determine tRFC */ |
| 3107 | sdram_detect_smallest_tRFC(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3108 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3109 | /* Program PLL settings */ |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3110 | sdram_program_pll_settings(&sysinfo); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3111 | |
| 3112 | /* Program Graphics Frequency */ |
| 3113 | sdram_program_graphics_frequency(&sysinfo); |
| 3114 | |
| 3115 | /* Program System Memory Frequency */ |
| 3116 | sdram_program_memory_frequency(&sysinfo); |
| 3117 | |
| 3118 | /* Determine Mode of Operation (Interleaved etc) */ |
| 3119 | sdram_set_channel_mode(&sysinfo); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3120 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3121 | /* Program Clock Crossing values */ |
| 3122 | sdram_program_clock_crossing(); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3123 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3124 | /* Disable fast dispatch */ |
| 3125 | sdram_disable_fast_dispatch(); |
| 3126 | |
| 3127 | /* Enable WIODLL Power Down in ACPI states */ |
| 3128 | MCHBAR32(C0DMC) |= (1 << 24); |
| 3129 | MCHBAR32(C1DMC) |= (1 << 24); |
| 3130 | |
| 3131 | /* Program DRAM Row Boundary/Attribute Registers */ |
| 3132 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3133 | /* program row size DRB and set TOLUD */ |
| 3134 | sdram_program_row_boundaries(&sysinfo); |
| 3135 | |
| 3136 | /* program page size DRA */ |
| 3137 | sdram_set_row_attributes(&sysinfo); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3138 | |
| 3139 | /* Program CxBNKARC */ |
| 3140 | sdram_set_bank_architecture(&sysinfo); |
| 3141 | |
| 3142 | /* Program DRAM Timing and Control registers based on SPD */ |
| 3143 | sdram_set_timing_and_control(&sysinfo); |
| 3144 | |
| 3145 | /* On-Die Termination Adjustment */ |
| 3146 | sdram_on_die_termination(&sysinfo); |
| 3147 | |
| 3148 | /* Pre Jedec Initialization */ |
| 3149 | sdram_pre_jedec_initialization(); |
| 3150 | |
| 3151 | /* Perform System Memory IO Initialization */ |
| 3152 | sdram_initialize_system_memory_io(&sysinfo); |
| 3153 | |
| 3154 | /* Perform System Memory IO Buffer Enable */ |
| 3155 | sdram_enable_system_memory_io(&sysinfo); |
| 3156 | |
| 3157 | /* Enable System Memory Clocks */ |
| 3158 | sdram_enable_memory_clocks(&sysinfo); |
| 3159 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3160 | if (boot_path == BOOT_PATH_NORMAL) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3161 | /* Jedec Initialization sequence */ |
| 3162 | sdram_jedec_enable(&sysinfo); |
| 3163 | } |
| 3164 | |
| 3165 | /* Program Power Management Registers */ |
| 3166 | sdram_power_management(&sysinfo); |
| 3167 | |
| 3168 | /* Post Jedec Init */ |
| 3169 | sdram_post_jedec_initialization(&sysinfo); |
| 3170 | |
| 3171 | /* Program DRAM Throttling */ |
| 3172 | sdram_thermal_management(); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3173 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3174 | /* Normal Operations */ |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 3175 | sdram_init_complete(); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3176 | |
| 3177 | /* Program Receive Enable Timings */ |
| 3178 | sdram_program_receive_enable(&sysinfo); |
| 3179 | |
| 3180 | /* Enable Periodic RCOMP */ |
| 3181 | sdram_enable_rcomp(); |
| 3182 | |
| 3183 | /* Tell ICH7 that we're done */ |
| 3184 | reg8 = pci_read_config8(PCI_DEV(0,0x1f,0), 0xa2); |
| 3185 | reg8 &= ~(1 << 7); |
| 3186 | pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); |
| 3187 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 3188 | printk(BIOS_DEBUG, "RAM initialization finished.\n"); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 3189 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 3190 | sdram_setup_processor_side(); |
| 3191 | } |
| 3192 | |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 3193 | unsigned long get_top_of_ram(void) |
| 3194 | { |
Sven Schnelle | 148a4f5 | 2011-04-10 07:41:56 +0000 | [diff] [blame^] | 3195 | u32 tom; |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 3196 | |
Sven Schnelle | 148a4f5 | 2011-04-10 07:41:56 +0000 | [diff] [blame^] | 3197 | if (pci_read_config8(PCI_DEV(0, 0x0, 0), DEVEN) & ((1 << 4) | (1 << 3))) { |
| 3198 | /* IGD enabled, get top of Memory from BSM register */ |
| 3199 | tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c); |
| 3200 | } else { |
| 3201 | tom = (pci_read_config8(PCI_DEV(0,0,0), TOLUD) & 0xf7) << 24; |
| 3202 | } |
| 3203 | |
| 3204 | /* if TSEG enabled subtract size */ |
| 3205 | switch(pci_read_config8(PCI_DEV(0, 0, 0), ESMRAM)) { |
| 3206 | case 0x01: |
| 3207 | /* 1MB TSEG */ |
| 3208 | tom -= 0x10000; |
| 3209 | break; |
| 3210 | case 0x03: |
| 3211 | /* 2MB TSEG */ |
| 3212 | tom -= 0x20000; |
| 3213 | break; |
| 3214 | case 0x05: |
| 3215 | /* 8MB TSEG */ |
| 3216 | tom -= 0x80000; |
| 3217 | break; |
| 3218 | default: |
| 3219 | /* TSEG either disabled or invalid */ |
| 3220 | break; |
| 3221 | } |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 3222 | return (unsigned long) tom; |
| 3223 | } |
| 3224 | |